Alimentary canal. Am lactose intolerant.

I am experiencing following symptoms: Excess burping with high noise Constipation very often Hotness of body but temperature less than 98.4 Sometimes weakness of whole body Sweating sometimes Unbearable warmness These all started after a homoeopathic medicine that i took for pain below ribs which got corrected but all above symptoms started and also sometimes i feel the pain again but very mild mainly on left side. Another thing is that when i finally get rid of constipation someday then immediately there is excess gas and i start feeling pain on left side below pancreas which eases as soon as i eat something with burping. I also noticed yellow stool but rarely and mainly if i visit washroom in an odd time rather my regular one(morning just after waking up). No alcohol but yes i have stress of medical entrance exam this year. I had shortness of breath about a month ago due to low rbc but i corrected it with polybion l and also i am lactose intolerant.