What is is it bormal for my girlfriend to hit me?

No, it is not normal for anyone to hit their partner or anyone else. Physical violence is never acceptable in any kind of relationship, and it can have serious consequences for both the victim and the perpetrator. It is important to seek support and advice from friends and family, or professional help from a counselor or therapist. Additionally, it is essential to create a safety plan, in case the situation escalates. Remember that you deserve to be treated with respect and dignity.