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Schoolies, festival season and a Bali trip have one thing in common: new people, late nights and a fair chance of sex with someone you didn’t know a week ago. That’s nothing to be ashamed of. It just calls for a bit of planning before you go and a testing plan when you’re back.
Most STIs cause no symptoms, and none show up on a test the morning after. Each has a “window period” before a test can detect it, so timing matters more than speed. This guide gives you that timeline, explains what’s different about sex overseas (including PEP in Bali), and lists the support on the ground at Schoolies. The testing itself can be done by phone or video from anywhere in Australia, including the airport on the way home.
Details checked against official sources in September 2026. Dates, clinic hours and vaccine eligibility can change.
The short version
- Possible HIV exposure? PEP must be started within 72 hours, and the sooner the better, in Bali as much as in Byron.
- Test for chlamydia and gonorrhoea about 2 weeks after your last new partner, HIV with a lab blood test at about 6 weeks, and syphilis at 6 to 12 weeks. Symptoms at any time mean test now.
- Some STIs are more common in South-East Asia, and drug-resistant gonorrhoea has been linked to Asia-Pacific travel, so tell your doctor where you’ve been.
- Gold Coast Schoolies (21 to 27 November 2026) has a free pop-up sexual health station, a free walk-in clinic in Southport and 24/7 Red Frogs support.
- STI Doctor consults and Medicare-eligible tests are bulk billed for eligible Medicare card holders, 7 days a week.
Your testing timeline after a trip or event
Count from your last new partner, not the day you got home.
| When | What to do | Why |
|---|---|---|
| Within 72 hours | If a condom broke or wasn’t used with a partner whose HIV status you don’t know, get assessed for PEP straight away. | PEP only works if started within 72 hours, and works best in the first 24. |
| Any time | Discharge, burning when you pee, sores, a rash, or pain after sex: test now. | Symptoms shorten the window. |
| About 2 weeks | Chlamydia and gonorrhoea (urine, plus throat and anal swabs if relevant). | The most common STIs in young Australians, and usually silent. |
| About 6 weeks | HIV lab blood test and syphilis blood test. Add hepatitis B if you’re not vaccinated. | healthdirect notes it can take 6 weeks, sometimes longer, for blood to show HIV. Rapid tests need about 12 weeks. |
| 12 weeks | Repeat syphilis (and HIV if advised) after a higher-risk exposure. | Syphilis antibodies can take up to 12 weeks to appear. |
For the detail behind each window, read our guide to how long after unprotected sex you can test for an STI.
What’s different about sex overseas
NSW Health’s travel advice puts it simply: STIs may be more common in some countries than in Australia, and you should have an STI screen on return if you’ve been sexually active overseas. Bali is the top destination for young Australians, and the points below apply across South-East Asia.
Higher HIV rates. Pozhet, an NSW Health-affiliated HIV service, notes that most of South-East Asia has higher rates of HIV than Australia, including among heterosexual people. If you expect new partners overseas, talk to a doctor about PrEP before you leave, because it needs time to become effective.
Drug-resistant gonorrhoea. The Australian Gonococcal Surveillance Programme’s 2024 report found 0.51% of gonorrhoea samples met the WHO criterion for reduced susceptibility to the main antibiotic used to treat it, more than double the year before. Where travel history was known for the extensively drug-resistant strains, most were linked to travel or contact in the Asia-Pacific. Telling the doctor where you’ve been lets them request a culture as well as the standard test, and a test-of-cure after treatment.
Vaccinations. The Australian Immunisation Handbook recommends hepatitis A vaccination for travel to developing countries, and hepatitis B for frequent or extended travel in Asia. Sex is one of the hepatitis B risks it lists for travellers to the region. Smartraveller says to see your doctor 6 to 8 weeks before you go, because some vaccines need more than one dose.
Getting PEP in Bali. The 72-hour rule doesn’t stop at the border. After a possible HIV exposure in Bali, go to the nearest hospital emergency department as quickly as you can. The Australian Consulate-General in Bali lists hospitals, including the main public hospital (Sanglah) and several private ones; the Consulate is on +62 361 2000 100 and the 24-hour Consular Emergency Centre on +61 2 6261 3305. Call your travel insurer’s 24-hour line too; you pay for all medical care overseas. We can’t verify which Bali clinics stock PEP, so don’t rely on a clinic website alone. If you’re flying home inside the 72 hours, call a PEP hotline before you land (NSW: 1800 737 669; outside its staffed hours go to an emergency department) or book an urgent PEP consult for the moment you’re back in range.
Schoolies: what’s on the ground
Gold Coast Schoolies Week 2026 runs 21 to 27 November. The Queensland Government’s Safer Schoolies site says the event has a pop-up sexual health station where nurses offer free STI testing from self-collected urine or swab samples, plus an Emergency Treatment Centre on site.
Off the beach, the Gold Coast Sexual Health Service in Southport (Level 4, 16 to 30 High Street, 07 5687 9200) is free and doesn’t need a Medicare card. Its walk-in express chlamydia and gonorrhoea check takes under 15 minutes if you have no symptoms; with symptoms, book an appointment. Queenslanders over 16 can also order a free urine test for both through the 13 HEALTH webtest.
Red Frogs volunteers, in black shirts and lanyards, are on 24/7 with walk-homes, room visits and someone to talk to. Save the hotline, 1300 557 123.
Safer Schoolies’ line on consent: freely given, informed, specific, and it can be withdrawn. If someone says stop, you stop. Use a new condom every time, with water-based lube. Two weeks after Schoolies is the time for a chlamydia and gonorrhoea test. Our Gold Coast STI testing page lists local collection centres, and every other city is on our locations page.
Festivals: new partners, quick checks
The Australian STI Management Guidelines recommend STI screening for all young people at least once a year, and NSW Health’s Play Safe programme says to test more often after a new partner or condomless sex. A festival weekend with a new partner is exactly that trigger.
Mpox. Mpox spreads through close skin-to-skin contact, including sex. The Australian Immunisation Handbook recommends vaccination for sexually active gay, bisexual and other men who have sex with men, sex workers, and people living with HIV who are at risk; their sexual partners may also be offered it. It’s free through state sexual health services in most states for eligible people, and it’s two doses, so start well before festival season.
Doxy-PEP. If you’re a man who has sex with men or a trans woman with frequent new partners, ask whether Doxy-PEP suits you. It’s a prescription antibiotic taken after sex to lower the chance of some bacterial STIs, organised before the weekend, not after.
Before you go: the checklist
- Condoms and water-based lube. Pack more than you think, and bring your own overseas.
- See a doctor 6 to 8 weeks out for hepatitis A and B vaccines, PrEP if you may have new partners, and mpox vaccination if you’re eligible.
- Learn the rule: PEP within 72 hours of a possible HIV exposure, anywhere in the world.
- Save STI Doctor’s number, (02) 9059 8295, your travel insurer’s 24-hour line and the Red Frogs hotline. Make sure the insurance covers medical costs, including evacuation.
- Students: our guide to STI testing for university students covers Medicare cards and testing between semesters.
When you’re back: the checklist
- Symptoms, or a possible HIV exposure in the last 72 hours: book today, from the airport if you have to.
- Two weeks after your last new partner: chlamydia and gonorrhoea. Say which countries you visited.
- Six weeks: HIV and syphilis blood tests, plus hepatitis B if you’re not vaccinated. Repeat syphilis at 12 weeks after a higher-risk exposure.
- Anything positive: we arrange treatment online and help you let partners know anonymously.
Frequently asked questions
I had unprotected sex in Bali three days ago. Is it too late for PEP?
Not necessarily, but you’re at the edge of the window. Call us or go to a hospital emergency department now rather than reading further. PEP works best the earlier it begins.
Does a negative test at Schoolies mean I’m in the clear?
Only for exposures at least 2 weeks earlier, and only for the infections tested (usually chlamydia and gonorrhoea). Anything from the week itself needs a test about 2 weeks after your last new partner, and a blood test at 6 weeks.
Do I need a Medicare card?
No, but it changes the cost. Consults and Medicare-eligible tests are bulk billed for eligible Medicare card holders. Without Medicare, our consult fee is $55 on weekdays and $75 on weekends and public holidays, and the lab may charge separately.
Will my parents or my uni find out?
Not from us. Your consult and results are confidential and sent to you by text. If you’re on a family Medicare card and worried about what a parent can see, tell the doctor and we’ll explain your options.
Book before the tan fades
Back from Bali, off the bus from Schoolies or still finding glitter: testing takes one phone or video consult and a visit to a collection centre near you. Book your online STI test, 7 days a week, 9am to 7pm Sydney time. Possible HIV exposure in the last 72 hours? Go straight to our urgent PEP page or call (02) 9059 8295.
Sources: Queensland Government, Safer Schoolies: Sexual health; Safer Schoolies: Red Frogs; Red Frogs Australia: Schoolies; healthdirect: Gold Coast Sexual Health Service; Queensland Government: 13 HEALTH webtest; NSW Health: Practise safe sex when travelling; Pozhet: Travel tips; Australian Gonococcal Surveillance Programme Annual Report 2024 (CDI); Australian Immunisation Handbook: Vaccination for international travellers; Australian Immunisation Handbook: Mpox; NSW Health: Mpox; Smartraveller: Health; Smartraveller: Indonesia; Australian Consulate-General Bali: Hospital and medical services; healthdirect: PEP; healthdirect: HIV; NSW Sexual Health Infolink: PEP hotline; Australian Prescriber: Testing for HIV; Australian STI Management Guidelines: Young people; NSW Health Play Safe: Navigating STI testing. This article is general information, not personal medical advice.
