Can Anal Sex During Ovulation Cause Pregnancy?

sir i have done anal sex with my girl friend and my some semen go near my girl friend vagina it all happen on 16 may any after 1 day she take i pill, after that a week she got blood from her vagina. her period almost take 32 days, her last period was on 2 April. now sir i am too much worry that did she is pregnant...?