HellO doctor,my problem & symptoms are very serious.after 21days of unprotected sex i have hiv symptoms such abdominal pain, ongoing diarrhea, extremely fatigue. Endoscopy report show,its acute superficial gastritisis.After 2 months my cbc,stool,urine test was normal.But medicine(antibiotics)is not helping me.After 7 months My HIV(combo),Hep b &c ,HSV1&2,H.PYLORI,VDRL (ALL NEGATIVE).Only CMV IgG was positive.But my CBC show a nonspecific infection.After one year and 6 months my hiv antibody negative again.Now i have ongoing diarrhea (black stool), stomach pain.Doctor don't understand my problem and I am sure It's not for my food habits or lifestyle or mental stress.I had never faced these sickness before that unprotected sex .Now i am planning for PCR test.If it's not hiv then which test helpful to find out possible causes?