I am 24 years old and I have been having a recurring yeast infection for the past 5 months. It first started when I was on some antibiotics. I went to my doctor and they prescribed monistat. It cleared the infection up within a week. However, about 5 weeks later, around my period, my infection came back. So I went back to my doctor and she prescribed vagistat. It cleared it up again and she said that if it happened again to just use vagistat. Well, it has occurred 2 more times and it is always right around the time I get my period. I am getting pretty annoyed at it. Although the med's do work, it seems to reccur around the time of my period. I'm not on any birth control pills, I don't have diabetes or HIV, I don't douche, and I wear cotton undies. Any suggestions?