no judgement please

My boyfriend and I have been dating for about 5 months. I'm 20 and he's 22. I'm not on birth control (yes I know, stupid) and at the beginning of our relationship he wore a condom and then we stopped using them (again, I know stupid) but he always pulls out. Well last night he came inside of me twice. And he came again inside of me this morning. This afternoon I started my period. Is it too early for that to affect anything? Is it still a possibility for me to be pregnant?