How long after a procedure, pill or exposure until sex, masturbation, toys or a test? One timeline per situation, with sources compared side by side.
Research
Only 21.8% of men started on testosterone in a 300,277-patient 2026 audit had the two early-morning labs the AUA and Endocrine Society require. The 12-point checklist for any Movember clinic, the sperm and haematocrit timeline, and what the 2026 FDA label moves did not change.
Research
Two long-acting PrEP injections, two very different late windows: cabotegravir tolerates plus or minus 7 days around the two-month date, lenacapavir plus or minus 14 days around week 26 with an oral bridge. Plus the IDWeek 2026 finding that 41% never received an injection.
How Long?
Ahead of the October 31 – November 1 Halloween + Daylight Saving Time clock rollback, here is why a 1-hour shift never breaks contraception—plus the 3-hour, 12-hour, and 24-hour missed-pill cutoffs, the 2–3 hour vomiting rule, and the 5-day Ella wait rule.
Research
Following Weill Cornell Medicine’s October 2026 $8.2M NIH/NICHD grant for an on-demand male contraceptive pill that pauses sperm motility in 30 minutes for 6–8 hours, here is how sAC inhibitors compare to YCT-529, NES/T shoulder gel, and vas-occlusive hydrogels.
Research
Taking 200 mg of doxycycline within 72 hours (ideally 24 hours) after condomless sex lowers syphilis and chlamydia by 70%–88% in clinical trials. Here are the dosing rules, stomach-protection steps, and 2024–2026 US, UK, EU, Australian, and Canadian guidelines.
Normal or Not?
When penetration feels like hitting a solid wall, the pelvic floor muscles are firing an involuntary protective reflex called vaginismus (GPPPD). Here is the clinical Q-tip diagnostic map, why Kegel exercises make spasms worse, and the 6-step dilator and pelvic physiotherapy ladder.
How Long?
Wait until all bleeding stops after an early miscarriage or D&C (and test at 3 weeks). After an ectopic pregnancy treated with methotrexate, avoid penetration until β-hCG is negative and wait at least 3 months before conceiving.
How Long?
After a total hysterectomy, the top of the vagina is sutured into a vaginal cuff. Because early intercourse is the #1 trigger of vaginal cuff dehiscence, wait 6–12 weeks (especially after laparoscopic/robotic surgery) before penetration.
How Long?
Toilet pain fades weeks before anorectal tissue can handle receptive anal penetration. Compare ASCRS and ACPGBI recovery clocks across fissures, rubber band ligation and haemorrhoidectomy.
How Long?
When a condom breaks or slips off inside, act on the biological clocks that matter: never douche in Hour 1, assess HIV PEP within 72 hours and emergency contraception within 72–120 hours, and test at Day 14 and Day 45/90.
How Long?
Emergency contraceptive pills delay ovulation, shifting your next period in roughly 1 in 5 users. Under FSRH and CDC rules, test if your period is >7 days late or at 21 days after unprotected sex.
How Long?
APP piercing standards separate the initial 2 to 6 week soreness wait from the full fluid-barrier window (4–8 weeks for VCH/PA up to 6–12 months for nipples), when all oral and genital contact needs barriers.