On the app its communities :)
Right now you are in the Pregnancy: Social forum. MedHelp has lots (and lots and lots) of forums. Here are a couple that might apply, and I am certain there are more: Women's Health, Maternal & Child. At the top of the screen (on my desktop, I don't know if it's there when you're on a phone) is a "Forums" list, if you click it, up comes the list of all the forums on the site.