My mum had endo really bad and wasn't supposed to be able to have kids - she still ended up with 2 unplanned lol me and my brother - and she had cramping suring the early stages.

I don't have endo that I know of, though the question did come up while we were TTC our DD but I never got the chance to see the gyno before I got pregnant (he ended up bein my OB though lol, I sould have asked him about it the last time I saw him d'oh) and I get a LOT of cramping in early pregnancy (and for the rest of my pregnancy too) with every pregnancy that I've had, though for me it is related to an irritable uterus.

Cramping in early pregnancy is usally normal, but if you are worried get it checked out by your doctor just to set your mind at ease

And I don't think you ever stop worrying lol I worried throughout both of my successful pregnancies, and I still worry about them both now lol