im pregnant but someone is trying to murder me

Im 2 months pregnant , this girl i go to school with punches my stomache a lot as friends, I don't think she's my friend anymore because when i told her i was pregnant , she started to punch me in my stomache about a joke she told during class.. today when i went home i started bleeding down their and i started to throw up bloood. ... i'm so scared because what if my baby died inside me and i'm going to die next. please help me i want to fall off a clifff !