Does douching cause problems?

Yes. Douching increases the risk that the normal vaginal environment will be disturbed, leading to abnormal and symptomatic vaginal discharges and infections. The vagina is self cleaning, the vulva may be washed (the outer lips and genitals) with water and mild soap, and eating a healthy diet and drinking plenty of water are all that is needed.
Agree w Dr. Townsend. The American College of Obstetricians & Gynecologists recommends AGAINST Douching.