I didn't see any groups that talked about this topic, so I figured I'd put it here. During my fertility window a few days ago, I experienced really bad cramping and sharp pains on my lower right side. At one point, I felt a burning sensation that started on my lower right and spread to my left. my first thought was maybe my appendix, but the pain went away. This lasted two days, then on the third day, I felt really hot and nauseous, but no pain. It's been two more days with no pain or nausea, and my fertile window is over. It seemed very coincidental and I was wondering if anyone else had similar experiences during their fertile window.