The National Women's Health Information Center lists these common causes of urinary tract infections in women: 1  Wiping from back to front after a bowel movement. 2  Having sex. 3  Holding urine for too long.  Being 1  diabetic. Having a kidney stone or other factor that makes it difficult to urinate.  Producing less estrogen, such as after menopause.
However, the estrogen hormones in Premarin Vaginal Cream may decrease the production and quality of breast milk. It is for this reason that estrogen-containing medications (including Premarin Vaginal Cream and many birth control pills) are not usually recommended for women who are breastfeeding.
Thrush and Breastfeeding Mothers. Breastfeeding mothers who have a baby with thrush may get a yeast infection on their breasts and nipples, causing pain while breastfeeding. In addition to getting treatment for their baby, these mothers also need to be treated by their doctor.