Charkee is spot on! You must report this monster to the police---follow Charkee's excellent advice! I must add something, however, since you are underage, the hospital may not want to check you without a parent or guardian present. Get out of the house and go to the nearest police station---the sooner the better. It's best to get there as soon as the rape occurs.
Don't put up with this any longer! Also, don't be afraid of speaking to your school guidance counselor if you can't get to the police station. By law, the guidance counselor will have to report the rape to the authorities.