vaginapagina | Post-intercourse cramping, nausea, lightheadedness (Reply)

Hi,
I am wondering if anyone has had similar experiences. This morning, my husband and I had sex which was unremarkable except for being a quickie and I wasn't that aroused when we started. I did feel some pressure, but not pain, on maybe my cervix as he penetrated me from behind. We both orgasmed, me with manual stimulation, and then after he came and withdrew a minute later was when it started. I began to have a very intense cramp, similar to a menstrual cramp, but more intense than any I've ever had. I also became lightheaded to the point where my peripheral vision started to blur and I was afraid I was going to pass out. I was nauseous and broke out in a cold sweat, which I am not sure whether is related to the pain of the cramp.

I elevated my feet, took an ibuprofen, and applied my trusty heating pad to my pelvic region. After about 30 mins, the pain subsided and right now I am feeling pretty normal.

This whole thing felt almost like some weird rebellion of my sympathetic nervous system, but was very scary. I am on Leena birth control pills and have been with little problem for about a year. I am on day 10 right now, so not premenstrual. I have no other relevant medical problems. Any thoughts?
Thanks for reading!