Cramping before AF due. 13 dpo.

Hi everyone. It's 13 dpo for me today. So far I've got three vvvv faint positives. Tomorrow is my AF due. From today morning im having cramps on the right side of my stomach. Almost near my right hip. Looks like AF cramps.Im really too tensed. I don't want AF to show up. Has anyone experienced this ending with bfp? Is it a good sign cramping? or AF is on its way? Any advices? Pls help me ladies.