Yeast infection??? plz help?

so my area has been itching really bad and tonight it is almost unbearable. Three years ago i had the same problem (itching along with these white sores in my vagina) and i went to two doctors (i was a virgin then and still am, there is no possible way that this could be and std) and neither knew what it was but my one doctor just gave me an antibiotic and i was instantly cured in a matter of days. I plan on calling the doctor tomorrow but in the mean time dose any one have any ideas on why this is re curing, dose it sound like a yeast infections. i read that yeast is present all over especially in moist areas such as the mouth and i get mouth sores all the time Could they be related?? is that even possible???