I had the same type of pains with my 2nd pregnancy - my first was a c-section. I was absolutely terrified, so I called my doctor. He had me come in right away, checked everything out and everything was fine. I also had a HUGE ovarian cyst (the size of a grapefruit), so he said that the cyst may have been causing extra discomfort. The cyst went away on its own as the pregnancy progressed and eventually the pains went away. I only had them once in a while, usually when I coughed or sneezed. Dealing with pregnancy after a c-section is much different than having a normal vaginal delivery.
I would definitely call your doctor and get it checked out. Better to be safe than sorry. Good luck and let us know how it goes!
firstly, this pain is NOT normal. I advise that you contact your dr immediately