Don't tell me I'm pregnant!

My boyfriend just called me and said that he's not sure whether he pulled out today in time. We do the pull out for the first of his ejaculations and then use the condoms. Also, I'm about to get my periods in next 8-9 days which means my ovulation period is over. He did cum outside as well, and is just 1% unsure. He wants me to take a contraceptive. Suggest what is it like and how does it work? I'm thinking to drink ginger tea thinking it might help.

Since my ovulation time according to eve is long over and it says there's a 3% risk of pregnancy, so do you think it's accurate?