I would say call your dr if your pain continues, but I am almost 6 weeks and had some pretty sever cramping a week ago, it hurt so bad i couldnt walk. it only lasted at most half an hour. even my right leg felt tingly, my dr. said everything looked ok and to not worry...
If that pain persists, I'd be calling my dr. immediately. It is normal to have some cramping, but what you're describing does sound alarming. If it gets really bad, you may want to consider going to an ER room. Hope all is well :)