Could be round ligament pain. Never feel bad.for.calling your Dr over stuff. I called my Dr monday about already feeling BH and ill probably call again for something else. They don't mind and I honestly feel like they would prefer you asking questions when needed then waiting. Good luck :)
is the pain severe? if its not excrutiating pain so much that your doubled over in pain I wouldn't worry but just to be on the safe side give your doctor a call and just check. best to be safe than sorry, but I can tell you that im 11 weeks 2 days and I often have pains on my left and sometimes right side, (more the left) when im walking,moving, or sometimes it can just come on when im sat down, like a stitch type pain or cramp. but my midwife said its all normal as its just growing and expanding down there, good luck!