What are they chances of pregnant if intercourse took place on ovulation day?

Minimal if protected: So i assume you're referring to unprotected intercourse, which can also increase risk for sexually transmitted disease/infection. Any way, if all variables line up right, 15-20% chance of getting pregnant around ovulation. If you keep trying, 40% chance in 1st 3mo, 70% in 1st 6mo & 85% in 1st yr. Check out http://www.Babymed.Com/getting-pregnant/what-are-the-odds-conceiving-conception.