more painful period

Hey ladies just a question, I have had the worst period that I have ever had in my 17 years of being on my period. I am trying to conceive and I was hoping I was pregnant. I got my period early and I had three horrible days, with lots of clotting and keeling over in pain, pain. I spoke to my best friend about it and she thought maybe it was a miscarriage. Any advice on what it could have been? Maybe just a bad period? I think I'm over thinking this because of how bad I want to be a mom with the man I am with, but any opinions ladies?!? Love to hear your thoughts