I've had a weird feeling in my lower abdomen for the past month that feels like I pulled a muscle or something in my uterus or bladder. I honestly can't tell which, but it's whatever is right next to the part of your hip bone that sticks out. It's a very uncomfortable achy, crampy, stretchy feeling. I don't know how else to explain it, but I've never had it before. One night, about two weeks ago, I was laying in bed and got a really bad pain in that area, like a spasm or muscle cramp, and a few minutes later it went away. Now ever since then I feel a constant pressure on my left side, which I believe is the side I ovulated on this month. I also have felt sick to my stomach the past few weeks, like sour feeling in my stomach and feel like I'm going to throw up, which has seemed to get progressively worse the closer I get to AF, which is supposed to be this weekend. I feel really restless, probably because I'm just so uncomfortable, and I'm at a loss as to why my lower abdomen feels like it does. I have also been burping a lot lately, with no relief. Sorry, that's kind of gross. I was diagnosed with IBS in 2009, but haven't had any symptoms of it since then, until recently....Any ideas? Anyone else experience this?