Your progesterone is nice and high and that will make you cramp. I was really, really crampy during my 2ww, but was unfortunately not pg. I've seen many women who were also really, really crampy and were
pg. What we all had in common was the supplemental progesterone and the cramping is a known side effect. Don't worry about it- just remember that the progesterone can do this. As hard as it is to wait, unfortunately you're not going to know until you get your beta. SO, in the meantime, make sure you do something (anything!) distracting! And leave your poor boobs alone!
Wishing you all the best.