[UPDATE] (All thoughts welcome...) Chronic condition that nobody can figure out...

Hi, I've posted here before about my chronic condition that nobody can figure out. Details below. I'd really appreciate any thoughts. Any at all!

UPDATE 1: I am currently being treated for vulvar vestibulitis, which my doctor thinks is what's causing the burning sensation during urination. I am taking Amitriptyline and Hydroxizine. I won't know if this helps my burning sensation for several more weeks.

UPDATE 2: I took a Microgendx test, and it came back as only:
Vaginal Swab: Lactobacilius crispatus/Acidophilus (High)
Urine: Lactobacilius crispatus/acidophilus (1.47 x 103)

However, I still have very watery yellow discharge (odorless), which I don't believe the above medicine will help. Does anybody have any idea what could be causing this type of discharge?

See below for everything else that has been ruled out. (It's a lot.)

When it started:
-Almost a decade ago at this point. It started with a UTI that was treated, but the below symptoms came and never stopped.
-I am 26/F.

Primary symptoms:
-Very sensitive vulvar area (feels like a rash, but no rash visible). This sensitivity/stinging feels very superficial and is at the entrance to the vagina at the 12 o'clock position, NOT inside the vagina. Near the urethra, including the "vestibule" portion of the vulva.
-Burning during urination (usually the worst when I'm dehydrated, or first time urinating in the morning)
-Abnormal discharge (watery, yellow/yellow-green in color, is NOT affected by stage in my cycle)

Possibly relevant:
-This was a sudden onset. The UTI happened, they "found blood in my urine," I was treated for it, but the discharge and stinging never stopped. For a decade.
-If soap ever gets near the entrance to the vagina, it stings. (FYI: I NEVER use soap on the inside area. I am just explaining that if soap accidentally touches this area, it stings.)
-It as at the point where I now need to use liners any time I leave the house because my discharge is so watery and constant. This NEVER happened prior to the onset of these symptoms a decade ago.
-Sex is painful at first penetration, but eventually it subsides a little bit.
-I have VP (vestibular papillomatosis that are very sensitive to the touch, but which were biopsied--results as normal/benign)
-All vaginal cultures have been normal, although one doctor did tell me my discharge had a high white blood cell count (?). (But all tests of discharge came back negative for everything, including through a microgendx (DNA) test.)

What has been ruled out:
-Had a cystoscopy, doctor said bladder and everything looked normal
-This is not an allergy, I do not use anything scented, I only wear cotton underwear, etc.
-Full STD panel came back negative, several times-HPV test came back negative (high and low risk)
-An MRI ruled out abscesses (but inexplicably showed signs of adenomyosis, despite me not having any symptoms of adenomyosis).
-Multiple skin biopsies of sensitive/stinging area came back normal
-Cultures of discharge came back normal, microgendx results above. Normal.
-I have tried lidocaine cream, lidocaine injections, nothing stopped the stinging/sensitivity
-I have tried antifungals (Monostat) as well as boric acid capsules, nothing has stopped this constant watery discharge. I have also taken an oral medication for BV. It was not BV, nothing changed after the medication.
-I have tried topical steroid cream for the stinging/burning/sensitive area. It did not change anything.
-I have tried a regimen of clindamycin 2%, Clobetasol Propionate 0.05 %, Halobetasol Propionate 0.05 % when my GYN considered Desquamative inflammatory vaginitis, but this did not stop my symptoms.
-I have never been pregnant.
-I have been going to Pelvic Floor Therapy, but so far it has not helped.