I would say you can mention it at your next visit but no need to call in just for that. Its ligament pain. When you sneeze or cough, it makes the abdominal muscles contract and it pulls on your ligaments. And with pregnancy you produce a hormone called relaxine that relaxes your ligaments and thus they can hurt more easily. I have those kind of pains too but really nothing to worry about. It lasts a few minutes then goes away.