My cycle averages at 32 days

Luisa
Wot day would I ovulate? Had unprotected sex on 3rd & 18th only this month :/ - busy planning my wedding - today I started spotting (as last month) tmi but only notice blood when I wipe :/ I'm not due on till 26th (5days)  - I've taken a pregnancy test yesterday due to symptoms but =negative- when should I retest ?