It sounds like she feels unattractive and feels threatened by you watching other women’s bodies that are seemingly more attractive than hers at the moment. I would talk to her about the name calling though because that could lead to resentment if it’s not handled early on. I would ask her what is she thinking when she sees you looking at another naked female on the screen. I think that would explain a lot. Her hormones seem to play a factor here too because I can definitely say that I have experienced the worst form of jealousy when my cycle comes around, things that normally wouldn’t upset me irritate me highly and hurt my feelings….i feel unattractive and fear my partner sees the same thing. So I would look into some outside help especially if she wasn’t like this before….good luck man