people touching my belly

I don't know if many people have this problem but I have this friend who is constantly touching my belly without asking to the point where she slept over and was touching me while I was sleeping! I've told her nicely to stop and not to touch me it took me a while to let my husband touch my bump but I don't like that I'm sleeping or sitting in the car and she starts touching me without asking. I've explained numerous times that I would prefer her not to but she tells me to shut up! I don't know what to do anymore