I just found out today that I'm pregnant and I've been cramping for a couple weeks. I thought my period was coming and got this awesome surprise instead.
I've been crampy off and on, as well as exhausted, queasy, etc., off and on. I don't think that symptoms have to be constant or equal or the same from day to day or pregnancy to pregnancy to make it legit (although I'm a first time "mom" after six years of infertility treatments, so I'm a novice, and exceedingly anxious on top of that).
Re: Cramping w/ 2nd pregnancy
BFP #3 on 7/23/16 EDD 3/30/16
Same here. Cramped quite a bit early and was super bloated. Now nothing. Didn't have much of either with DS1.