Hello,
It can be due to fungal infection or cnadida infection. Candida may involve the oral cavity (thrush), the pharynx or esophagus, the gastrointestinal tract, the urinary bladder, or the genitalia.The best tests involved in the diagnosis of candida are scrapping or swab examination of the scrapings after KOH mounting. Then topical and oral antifungals can be started.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
You could have a yeast infection or pubic lice. I would get checked out