Herpes virus is not at all a common cause of prostate infections. There are very few and rare reports of herpes in the prostate, but your symptoms are not suggestive of a herpes infection.
I would be more suspicious of other causes of prostatitis and prostate enlargement- either common enteric bacteria, or gonorrhea/ chlamydia. You should have appropriate testing by your doctor and be treated with appropriate antibiotics. I suspect the herpes is a separate issue.
Always ask if you need clarification/more information.
POSITIVE feedback & a BONUS are warmly appreciated. Please note that answers are for information only, do not take the place of an assessment by your doctor,and does not establish a patient-physician relationship.
I did not see your last few lines when I posted my answer.
Amoxicillin is not a great choice of antibiotics for prostatitis - it does not get into the prostate very well, and most of the bacteria that cause prostatitis are resistant to amoxicillin. I would hope that a culture was done before this antibiotic was chosen.
In men chlamydia can cause a "urethritis" with pain with urination and sometimes burning and discharge, or it can cause epididimitis ( pain and swelling of the epididimis which is next to the testicle) or prostatitis- enlargement and pain of the prostate with pain urinating.
Chlamydia is not uncommonly asymptomatic in women- they may have it and pass it to others without knowing. In these cases it is only detected by doing a culture or PCR test to detect it. As for if she could have had both.. the general rule is if someone has had 1 STD they certainly could have had more than one.
Your questioning makes me wonder if the herpes diagnosis was confirmed- I would suggest you have a doctor- either a urologist or an infectious diseases specialist properly assess you, and make a proper diagnosis of your problem, with appropriate cultures and antibiotics.