Anyone experience period pain and end up pregnant?

I have terrible period pain before my periods. They think I could have endometriosis. My af should have been here Tuesday (I ovulated 2 weeks before Tuesday) I had terrible cramps Tuesday like af was coming and some very mild cramps yesterday but here it is Thursday and she hasn't showed up. I'm gonna test in the morning but was curious if anyone had experienced this before and was pregnant. I hate getting my hopes up for no reason we have been ttc for 3.5 years we had a Mc in may of 2014 that was my only pregnancy so far.