I just started Klonopin and have been feeling yucky all day (calm, but yucky) and Pledge if you read this I am trying not to panic ;) But I was wondering if anyone else who takes this has experienced lower abdominal cramps. I didn't see that listed among any of the side effects. It does say increased menstrual pain, but I'm not menstruating right now. I do have endometriosis tho, so maybe it could be causing my lower ab to cramp because of that??? It scares me when a pill seems to help with one thing and makes other things worse...