I am a 31 yesr old accountant who has been dealing with strange episodes of nausea for about a year. It started out as occasional bouts of nausea, kind of like motion sickness, it would come and go in waves about once a week. Then it got worse, coming in waves about once a day then progressed into horrible nausea that woke me up in the middle of the night about once a week and I would dry heave all night until the sun came up. Then it got to be nausea all day long with vomiting every night all night. Sometimes I would shake really bad and get chills with no fever, my bp and heart rate would go up really high and I would have a bowel movement. Finally I went to a gasto Dr. I had an egd, it was normal (they thought I had an ulcer). Then I had a test where I swallowed some chalky stuff, it was normal. Finally I had a gastric emptying test and it was borderline normal. I had un ultrasound on my gallbladder checking for gallstones & it was normal. A surgeon thought it was my gall bladder anyway-(it was distended), so I had it removed. The nausea got a little better, but I still had episodes of nightime nausea, tachycardia with shaking and bowel movements. I recently found out that I have too much methylhistamine in my body and I take claritin 10 mg 2x a day along with zantac 75 2x a day. At first this helped, now all of the sudden I am starting all over again with the nausea. It started now with early morning nausea, now it's coming in waves all day long. I haven't had any vomiting yet, but it sure feels like I'm going to. My question is, does this make any since & are there any other blood tests or diagnostic tests I can ask my doctor to do that hasn't been done yet? I had an ultrasound done to check for any blocked gallstones and some blood work to check for liver enzymes, all normal. This nausea is ruining my life. Please help!!!!!