I had the same problem post-partum. My OB prescribed Ovestin cream, which sounds similar to the Premarin mentioned by PP, and was inserted into the vagina with an applicator. It helped a lot, but I stopped using it when I read the leaflet and reduced milk supply was one of the potential side effects. Since I was struggling with low supply already I didn't need anything else making things harder. Sex still hurts somewhat, nearly 10 months post-partum, but it's improved a lot with time and the benefits outweight the disadvantages IYKWIM
