Cramping?? (Any feedback is greatly appreciated)

So last night I checked my cm and I had ewcm. I couldn't BD cause my hubby was at work. I planned on BDING today just to be safe. But I'm currently experience some cramps. Like it literally feels like AF is coming any minute. She's not due for another 12 days. Has this happened to anyone? Could it be a good sign? This has never happened to me before. And AF never comes early for me.