Why do i constanly get yeast infections?

Any reason: Things that may encourage an excess growth of vaginal yeast include using antibiotics, having high estrogen levels (such as during pregnancy, hormone replacement therapy use, high-dose birth control pill use, & the follicular phase of the menstrual cycle), having diabetes, having an impaired immune system, using corticosteroids, such as prednisone, & being overweight. Avoid douching, see your dr.

Infections: If you are recurrently getting yeast infections i would get checked. Diabetes, thyroid or underlying immune problem would be possible. Another problem could be that your sexual partner has an infection and they may need to be treated.