Sharp pain... Any ideas?

Ok so this has happened maybe a handful of times ever. After BD with the hubs (sometimes it will be during) I had several very sharp pains in the uterus/cervix kinda area lol i know it wasn't ovaries or vagina but between the two. The pains are in the middle and sharp stabbing like. They don't last long but they are debilitating... Like hunch over and just hold my breath hoping it stops. The last time I can remember this happening was my wedding night October 2012 and before that it was the feeling I got right before beginning of my miscarriage in 2010. I am not prego that I know of (fertile window just closed... Like yesterday). Any ideas? On a side note I've also felt nauseous and super tired/ stressed the last 3 days. What's going on!?! Lol help ladies