Anyone else have any cramping or aching at 8 weeks pregnant?

Since I experienced a loss a few months ago, I can't get passed the feeling that something is going to go wrong. We saw the baby's heartbeat (twice now), but I have been getting these dull aches in my lower pelvic area - like a full feeling. I don't remember having this with DS (although that doesn't mean anything, my memory is shot!!)

Reassurance would be greatly appreciated!!

And Merry Christmas Eve!!