Cramping

Brittany
I'm 12 DPO and on cd28 and I'm experiencing the most painful cramping right now. AF is supposed to show Monday. My cycles have been 28-30 days long. I'm not spotting and I have creamy cm. Is cramping common when you are pregnant or just AF? I was confident this month but now I'm not sure. I was trying to hold out to test until Sunday but now I don't know.