Discrimination??

Hello all, im a 16 year old girl that goes to school. At our school we have female and male change rooms, all the girls get dressed in one change room and the boys in the guys change room.
I recently came it about 2 years ago, that I was bisexual. But recently, something happened and I feel so bad. The girls in the change room told the teacher that they feel uncomfortable with me in there because im bisexual and they don't want to be looked at like that. So, the teacher approached me and said that I need to get changed else where or wait for all the others girls to leave the change room before I can enter. Is this discrimination? Because I feel segregated and different. It's affecting my mental health. 
Thanks for listening I just wanted to clear this up.
PS. The girls in my sport class aren't even attractive enough to look at.

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