-yellow or greenish with a bad smell+Pain and itching while urinating. Might be trichomoniasis.
- yellow with fishy odor+Itching or burning, redness and swelling of the vagina or vulva. Could be bacterial vaginosis.
-yellowish or creamy white discharge means a candidal infection
and as you observe ,there are several causes that could be known during a gynecologist physical examination and every cause has different target treatment
So i advice you go to another doctor to diagnose and give necessary treatment .
beside follow these rules to protect yourself from recurrency :
-wash freqeuntly with water alone
-don't use soaps and other perfumes while washing your vagina this might change the ph of vagina and causes infections
-use only feminine washes from pharmacy with good ph
-wear loose cotton underwear
-drink frequently and lots of water
-avoid any irritant ,condoms
avoid sexual intercourse during the infection
-take the medication prescribed by the doctor according to severity and the infection involved