So I Had Sex For First Time Yesterday And This

So I had sex for first time yesterday and this morning had very intense cramps to the point it was hard to walk and I felt like throwing up which is not normal for me, was bleeding and I'm not supposed to start my period for about 2 more weeks, had bloody stool for a little while and it still burns and now I'm concerned that there's something wrong. Is there a chance I could be pregnant? We didn't use a condom or anything or could it be a cyst? I've read several places that the pain I'm feeling could come from a ruptured cyst. I'm 17 and have had multiple cysts in my breasts so could this be the case?