Girlfriend broke up with me after losing her virginity what do i do?

So I go over to my girlfriends house and I noticed she was acting weird after we had sex a week prior. I took her virginity and confirmed that she was one and she stated that she felt weird as if she has anxiety and unsureness. She also has never had that many boyfriends and I believe her friend talked her into ending it with me.

Also she stated that she felt like that I liked her more than she did and she felt it as if it were unfair. I felt as if she were trying to make me feel bad or something and stated she doesnt see her life with me because she were to move to school in Washington. She stated that I was a good guy and a good boyfriend too.

Another thing too she stated that she would get mad at me for no reason and I really didnt understand that. She stated I was a nice guy and a good boyfriend. She didnt seem or act like she was cheating or had another guy to the side. She is super loyal. We broke up during her period (idk if that could be a factor) but she seemed irrational and it was totally unexpected that she broke up with me that night.

What do you think what will happen? I also saw her today and she looked sad and down (i was just being me happy and keeping my head high) and when i was driving away i saw her going to her car avoiding eye contact and looking at the ground? Whats up with her??