pregnant?

Mackenzie
I had sex and he came inside me 9hrs before I started bleeding for my period (I was already in pain tho with cramps 😒) I'm also on birth control and take it really well, have never missed it or taken it more than like three hours late at the very most, I've been on it for over 7 months. what's tha chance I could be pregnant? my boyfriend is more worried than I am and I just feel bad.Â