Stomach upper abdomen pain. Will go?.

I am single female 29yrs old.i have a stomach pain and diarrhea from many months.I went to the gastrologist and he said that this problem is caused by taking stress Or IBS can be symptoms.he gave me this medicine..Tab Novamcin RT,Cap Immodium,Tab revortil.I took this medicine till one month and my motion and pain also got cured.But now I lay hands above the navel, so I feel like heaviness there.I got again from the doctor, And written test TSH,CRP,CBC...Test results came TSH:1.71,CRP:3.46 MG/L,HEMOLGOBIN:11.3,E.S.R: 110,P.C.V/HAEMATOCRIT: 35.5 ,RDW(CV): 15.2 then he gave the same medicine again and add one more Tab MEGANEURON OD.but still my navel did not go heaviness.Someone tell me how this heaviness will go??..