Hi, I had really severe cramps and pains with my first. As the others have suggested it was caused by constipation. I have IBS so pregnancy hormones really irritated it. Even without IBS Preganacy hormones can cuase constipation and lots of wind!! (Gross I know).. My GP was great and did an ultrasound so i knew all was ok with the bub.If continues I would def ask for a scan just to ease your mind that all is ok..