Okay so , I lost my virginity a couple of weeks ago , and I'm jot on the pill or anything because I had no reason to be . But he put q condom on just to be safe , but when we were done and he pulled out , the condom was gone. I later found it inside of me. It was in there about an hour until I got it out. So not knowing when he had cummed , I went the the store the next night approximately 14 hours later and took plan b. I have really irregular periods too :/ but anyways all this happened on the 2 . And I revived my period about 11 days later but it was short. Like 2 3 days. Today it's been 8 days since my period had started and the past two days I've woken up and felt nauseas , and had Diarrhea , and then bad headaches in the afternoon . There are so many reasons why I shouldn't be pregnant due to me having my period and taking plan b , but is it a possibility or maybe something else is wrong ?