 [ Symptoms ] since late last year l have been complaining about my loss of appetite and consequently loss of weight [ Disease ] hi in my opinion you have vulva yeast infection regarding you 14 days menstruation you have 4 possibilities no1 is contraceptive pills side effect no2 endometriosis no3 thyroid gland dysfunction no4 normal premenstrual syndrome so i recommend doing uterus us tsh t4 tests good luck