I don't know if this helps or not, but my boyfriend was showing very similar symtoms and I ended up getting HSV-2 from him.
I had been diagnosed with herpes for one year. I didnt have any cold sores.
If you have no sores, you can wait two or three months to get blood tests for herpes, IgG and IgM tests may find out antibodies of herpes in your body. But it's more accurate with a swab test when you show up herpes blisters or sores
HSV2 can give these symptoms. I remember having terrible diarrhoea and burning in penis within few hours after exposure. The diarrhoea lasted 2 weeks, no medication helped, it stopped on its own. Almost a year now, still no blisters and sores. It's just the daily burning sensation in the penis.
I have also had these symptoms for over a year now. Constant Burning penis, diarrhea 2 days after exposure, constant irritation in throat,gums,cheeks ,burning feet, hands, legs, back pain, rash on neck, tested for everything including herpes all negative, no sore except one or two pimples in groin just after exposure... sounds like hsv???