Hi. Thanks for your query. Noted the history and understood your concerns. Pain in abdomen on both the sides that goes to the back, nausea, dizziness and headache are a serious problems as these are indicative of an intestinal infection. I would advise you the following in such a situation: Get a clinical evaluation done by a Doctor. Get the stool and blood tested to find out the probable cause. You may then need a course of an antibiotic, metronidazole, symptomatic and supportive management. Since there is uneven pulse the cardiac problem as primary thing or due to intestinal infection as a result of septicemia has to be evaluated well to get a proper diagnosis and management, preferably under the care of a Cardiologist.