Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
I suggest that you immediately get your partner tested for STD's (if she is experiencing pain during sex it could indicate a
Pelvic Inflammatory Disease).
Consult her Gynaecologist immediately for this. Especially mention all menstrual, urinary symptoms, any fever, any discharging material and the pain during sex.
Ultrasound on your testis should be repeated once more to rule out any other cause of
testicular pain. Testicular biopsy sample could also be taken to rule out any infection (post ultrasound) and this will also help to rule out any
testicular cancer (although this is very rare possibility).
Most likely based on your symptoms I would think it’s an STD (test for syphilis should also be done as I noticed you said chlamydia and gonorrhea have only been tested).
What I suggest is going to a
Urologist and get a full check-up done before any underlying disease can progress/worsen.
I hope I have answered your query. Let me know if you have any further questions.
Regards,
Dr. Ankit Gopinath