Cramps and pelvic pressure

Amanda
I am 8 weeks along. We went and had our first doctors appointment Tuesday. The babies heart beat was 150 and everything checked out great. During week 4-6 I had experienced cramps, but it seemed to have stopped. Yesterday I was on my feet a lot and did not drink barely any water. Last night after dinner I ended up with terrible cramps that lasted though out the night and pelvic pressure. I almost felt like it was a combo of cramps and gas build up. I went to the bathroom multiple times. I feel better this morning, but still not 100%. Feeling nervous! Anyone have any similar experiences?