(( VaginaPagina ))

In short -- yes, it could be the sex. My experience with larger partners has been that eventually the problem works itself out as my body adjusts and we get a bit better at the angles. Could also be an ovarian cyst. On the other hand? People have been telling me I have ovarian cysts for the past ten years and they've never found any on ultrasounds. I've got "idiopathic pain" and "idiopathic bleeding," meaning nobody really knows what it's from. Good news? If it's from sex, it will probably go away, particularly if you can shift positions a bit.