pregnant if the condom didn't fit him correctly.... so terrified now?

On December 31, my boyfriend and I "tried" having sex for the first time. We're both virgins. We were in the process of trying when I just got so paranoid that he didn't put the condom on right so I made him take it off and put another one on, in which I helped him. But then I got paranoid that it just didn't fit him right and that there might have been a small hole or tear. Plus I might've seen some air bubbles but I'm not sure. We had a lot of trouble getting it inside, and I kept checking to see if the condom was still intact but I couldn't tell.

Maybe he got like an inch inside (if even that) which I don't even think so because I didn't feel any pain or any sensation. I felt moisture on the condom during but after it already touched me so I wasn't sure whose it was. We were both kind of fumbling around, trying different positions but just couldn't get comfortable but it just wasn't working so we stopped. I'm a worrier, but should I be? We never touched unprotected.

plus I've been having the worst cramps all this week to the point where I want to vomit, its awful like I'm about to get my period. Last month I got my period (which I've always been irregular) on the 11th, so I should be due anyday now but I still feel like I should've gotten it by now. I'm just having real bad feelings about it.