Hi there and Congrats.
Yep i though that i was getting AF due to the cramps but was 4-5 weeks pg - we were not TTC so found out as i had a dream that i was pg and so did a test!

I got cramping on and off up until about 12 weeks and then it went away.
If you get any bleeding or they change or become severe thou, go and get checked out.

Congrats again