okay so my period was due to come this morning so far nothing . Last night before bed I started to get painful cramps and I had to be in the fetal position .they went away and I fell asleep . In the middle of the night I woke up to pee( this is normal for me ) I almost couldn't get off the toilet because there was a sharp stabbing/ cramping pain in my stomach. This isn't a cramp I've ever felt before with my period .it felt different . It was so severe I had to crawl to bed . The stabbing stayed in my stomach for about an hour and my shoulder and thigh started to cramp too . 

Whats going on? Has anyone ever experienced this ?