Still possibly pregnant ?

There are several different questions in this paragraph. I have a pretty irregular period. I had my period on a Sunday, it ended the followin Thursday. I had sex that THursday night. I had sex again that following Monday night. He wore a condom, but when he took it off, it was ripped. I was really scared, so I took plan be less than 24 hours after. It was five days after the intercourse on Thursday. 2 weeks later I had an early 2-day period. If that was NOT my real period, then it is about 2 days late. I'm really worried now. I don't know if I'm just paranoid, but I feel really bloated and urinated a lot. I also have pain in the abdomen when I push on it and sometimes without pushing, such as cramps. I took a pregnancy test about 18 days after the last intercourse. It was negatice. I was wondering if that was too soon or if it was most likely correct. I was also wonderin if I could be pregnant from intercourse on that thursday or that plan b possibly didnt work? I'm also curious if that 2 day period was my real one? I'm just overall really really scared. I'm stressing big time. Any advice is appreciated!!!! thanks