Uhhhh so I’m freaking out?? Idk why... tell me your stories

A little over a week ago I had sex with my boyfriend. He didn’t have a condom on him so he convinced me into doing it without. He said he knows he when he is gonna cum and that he would NEVER cum in me. Well as soon as he stuck his penis in ...it lasted like a minute before I stopped him and told him no because I have terrible luck and just the thought of having a baby at this age is un imaginable. It was a really short amount of time and That was the end of that. ( he did not cum at all). But I’m so paranoid. This app says I start my period in 12 days and it’s pretty accurate almost all the time. The countdown is killing me. All my friends are telling me I’m perfectly fine fine and all I can do is wait. I feel like i did the right thing stopping him because we both were a little tipsy and not thinking. For the past few days I have been getting slight headaches. Lol that could honestly be anything. Is it to early to even tell if I was pregnant?? Please don’t judge I know it was stupid but I’m glad i stopped it before something bad actually did happen. Have any of y’all had sex without a condom just to try it ?? Any stories kinda like mine or just a time that u have had sex without any protection ???I just need to feel some sort of relief ?? I’m having bad anxiety and I’m over thinking every day.🤦‍♀️ someone talk to me :(