B.C.
Sounds like candida (yeast). Go to the doc because I'm NOT a doc and I could be wrong. There is an oral pill remedy to help the whole system get rid of yeast.
Cut out the sweets, breads, & carbs for awhile, too. The sugars are feeding the yeast. Add PRObiotics to your diet through yogurt or suppliments. I like the brand PB8 as it has many different strains and no dairy (which can sometimes feed yeast or affect people with allergies).
Good Luck,
B.