DoublePortion:The cramping might just be from everything in that area being messed with or implantation cramping. Also, I've seen women on PAIF post that they have AF-like cramps for weeks into their pregnancy. There's just no way to know, but if it gets to be very painful you should probably call your dr. Good luck!!
Ditto to this....hope they're the good kinda of cramps for you though!!