What Causes Severe Stomach Ache And Nausea?

What can cause my stomach to feel like I am cut by a lot of knifes, and so feel like I am needing to pass something, when I had my period two weeks ago. I had my goalbadder,out three months and since I got it out still having pain problems that send me to the ER, at the hospital had cat scan done, that showed nothing, doctors think I have Irritable bowel syndrome, but not sure, I do not have thyroid, so I am on thyroid meds, had endoscopy done last year, GI doctor was treating me for acid reflux disease, do not have that, I have been having a lot neasa lately, almost every day, I am lactose intolerant,my doctors are very confused as to what is causing my pain problems, I also had tubes in ears at one time, had wart in my ear at one time,also having some dryed blood in my ear, I have dull achy pain around my bellybutton, I am pee constantly, plus peeing myself, just my underwear, I am using a painty liner, on a relaxer pill to help me with cramping in my stomach, when the pain is Er bad I have to be in a position with my legs bent up to my chest if I am sitting, if I am laying down, I can bend my knees while on my side, and some pain on my right side to, my White blood cell count is in the low normal, look for a second opinion, please help me find out what the pain is coming from, dull stabbing pain constantly, even took dyclemime, at 8:00 this evening.Please let me know what you think it could be. Thanku.