I had sex?? Could I be pregnant

I had sex 2 weeks ago. We used protection and he came at the very end in my mouth. Took him awhile to come. Everyone is telling me I'm fine. I'm so paranoid like I have been stressing about it for these past 2 weeks. My period is supposed to come in 6 days and my nipples feel a little sore. Is it normal to have sore nipples when your about to start your period??? And the first couple days after I had sex I stressed so much and I had cramps. I would break down and have so much anxiety. I don't really have cramps now my nipples just hurt a little. I'm so scared like all my friends are asking me why because we used protection and he came in my mouth. But Idk I have terrible luck so i won't be doing this again. I'm just scared. ?? It's been 2 weeks of hell and the countdown to my period is killing me like am I feeling pregnancy symptoms or period symptoms???!!!?!?!?