Well i had sex today and i felt something different this time my stomach started feeling hard after i had sex why is this. this is the first time i get this feeling. and it cant be that im bloated or anything that has to do with period cause i had it about 2weeks ago. my sister told me that probably im prego. but still getting my period. she was preg. and had reg. period into she was six months preg. but i don't think im the last time i had unprotected sex was april. but i have been having this problem i been thrown up my food after i eat but it comes up by its self.