Hi, Thanks for the query. The possible causes for your problem are : - Diabetics are more prone for infections. As the blood sugar is not under control, there is more possibility for vaginal infection. Curdy white discharge is usually seen in fungal infection. -Prolonged estrogen usage can lead to erythema of the vaginal area sometimes. So, better to consult gynecologist once and get examined to find out the exact cause of the problem. If there is infection, you can go for vaginal swab culture and sensitivity to find out the causative organism and take treatment accordingly. Controlling the blood sugar levels will help in clearing out the infection. If the cause is found to be the estrogen supplementation, better to stop for few days till the problem decreases with your doctor s advice. Take care.