The odds are very low. A one time unprotected exposure with a known positive partner has about 1 in a 1000 chance of spreading the virus
Your GP is fine. I've read were the blame for odd symptoms are blamed on herpes but have not witnessed it. I think it's important for your peace of mind to figure this out and swabbing the area is the next logical step. I wish you all the best with this and hope the swab provides answers for you.
Ok. When you get the circle areas of irritation you can have the area swabbed and pcr tested to see if these are indeed outbreaks. If they are then this is unusual.
This doesn't sound hsv related. What test did you get a positive on? Igg or igm? What was the numeric value of the positive test?
Symptoms that you describe and the length of time would not be typical of hsv at all.
I agree that the genital focus after testing positive can really mess with your head. If you don't know the info I asked for please see if you can get it. It's very important as hsv tests can be unreliable.