I might be pregnant BUT...?

I'm not even scared truly. I know I'm younge ad I was stupid but I'll live with that. But yeah symptoms I've felt --I have to pee alot more than usual, headaches, chest and lower back pains, pretty sure spotting at the beginning I think, I didn't get my period this month. But the thong is he used the whole "pull out" method. If he pulled out before he ***'d inside of me could I be pregnant? I don't know if that even works. Advice if I am? Don't judge. Thanks.(: