Synopsis
Explain barrier and fertility-awareness methods without overstating efficacy, including correct use, STI protection, emergency action, fertile-window interpretation and situations that make observation unreliable.
- External and internal condoms reduce STI transmission and pregnancy risk; no other contraceptive method provides this dual protection.
- External condoms are about 82% effective in typical use and 98% with correct use; internal condoms are about 79% and 95% respectively.
- Put an external condom on before any genital contact, pinch the reservoir, unroll fully, use a new condom for each act and hold the base during withdrawal.
Key red flags
Non-consensual condom removal, deliberate damage or pressure to avoid contraception can be reproductive or sexual coercion and requires a private, trauma-informed safety assessment.
Investigation priorities
Determine whether emergency contraception is indicated after incorrect or unprotected intercourse.
Management branches
External or internal condoms are chosen for pregnancy or STI prevention.
- Select an in-date quality-marked product and compatible lubricant, check latex allergy and practise correct orientation, placement and removal before reliance.
- Use one new external or internal condom from before genital contact through completion of each act; never use the two types together.
Key medicines
Contraceptive spermicide for diaphragm or cap useApply the product-specified amount to the correctly fitted diaphragm or cap before every episode of vaginal intercourse, add further spermicide as directed and maintain the required post-intercourse retention time.