I would stop worrying so much about HIV. Why dont you get a stool test to look for bacteria. You may have picked up a stomach bug. If it persists ask for a colonoscopy.
I've had both blood tests and stool tests done and both came back with no problems although my stools are different ever since the stomach pain. (which felt like i'd been stabbed)
I gonna get them to see if the stomach pain was acute or chronic pancreatitis (Ive been drinking a hell of a lot over that last 3 yrs although have stopped since February) and see if I have pancreatic insufficiency or something.
I don't seem to have any other problems other than digestion and strange stools
Usually a problem with the pancreas would show in bloodwork as well. Maybe a colonoscopy to rule out colitis chrons or other things. Have they checked your gallbladder? Thats another thing that causes a lot of pain and can cause weird stools. It usually hurts on the right under the ribs and sometimes in the back. Also check for h pylori infection.
If you did have lesions then you may have herpes. I would not worry so much about the hiv if tests have been neg. Herpes could possibly cause the swollen nodes in your groin.
I can live with the herpes and gonna get them to checkout H.Pylori, Pancreas and Gall Bladder thanks for the advice any ideas on what going on is appreciated.