If you are sexually active and you had sex a day before high.f and the day you ovulate, is it possible if you get pregnant? when to take pregtest?

Sure - check UPT!: If you had vaginal intercourse around the day ovulation day (+/-5 days) you have a ~25% chance of being pregnant. Check a urine pregnancy test (over-the-counter from your local drug store) to know for sure (90% accurate the day after late period, >99% accurate the week after missed period). Take Folic Acid 1-5 mg daily and good luck!