Hi Pinkyloonoo.
You may have a multifactorial infectious condition, with both fungal and bacterial or viral infectious agents involved, possibly Candida Albicans and Staphylococcus.
The Candida is easy to miss in testing, which makes me think, it could be the main causative factor.
Vaginitis could be an additional condition, a complication
due to a drop in healthy vaginal bacteria ( likely due to a bacterial or Candida infection).
So forget about all the normal test results and start a strict anti-candida protocol, avoiding all sugars, most simple carbs yeast, going very low carb, limiting stress,
taking multistrain high quality probiotics and lots of virgin organic coconut oil.
Oil pulling daily with coconut oil with 1-2 drops of clove essential oil (both organic) would help with oral candidiasis.
Coconut oil has anti-fungal, anti-viral, anti-microbial and anti-parasitic properties.
Taper up to 4-5T daily.
Note: It takes a long time to eradicate candida.
And in the event that it is not candida (I would be surprised if it is not), you will be much more ahead, healthwise, if you follow the anti-candida program.
Best wishes,
Niko