I need some help please!

Im 15 and me and my boyfriend were making out one day and I was so turned on that I told him to put his penis inside me a few times without a condom on. (Im not on birth control either) I know it's stupid. But he has never had Precum before like when I would jerk him off. He knows he was even about to cum, and he could only get the head in because of how tight I am. And it was only for 1 minute tops. I told my closest friends and they said that I could get pregnant from Precum  and now they have me thinking I am. I asked another girl at my school and she says that her & her boyfriend don't use condoms and he just pulls out(she isn't on birth contol either) I have had a lot of stress also. My period is 5 days late today. I don't know what to do😔 Can someone please help me, but not put me down for my decision. I've learned from it a lot & promise this isn't going to happen again. I have enough stress and just need some advice. Please & thanks.