What to do??

So in my PE Class there was this girl that is in 8th (I’m in 7th) and we were playing dodgeball but in a different way and we got teamed together and the girl got out so I went to take the ball them she got back in when I grabbed the ball she dropped. Then she grabbed my arm tight pitching it almost she looked at me like she was gonna fight me and she said “give me the fucking ball right now” it took me like 30 seconds to realize what is happening then I finally gave her the ball.

Later on that day she gave the ball to the other side and me and this girl looked back at her and and the girl said “you can’t do that” then the girl that grabbed my whispered to her and I didn’t see or hear what she said and she gave the ball too her so she can hit me too get me out

Anyway

Then today 4-24-18. We were playing soccer and then this OTHER GIRL different from last time I tried taking the ball she said get away from me then I let her be then later on the girl had the ball again and she was literally BY THE TEACHERS I went over there to take the ball she said get the fuck back and she put her fist up at me I flinched I put my hands by chin flinching

I’m tired of there shit what should I do I don’t think I should snitch cuz maybe there ‘joking’ but I need help this isn’t bullying right?