help. please dont judge

I am a junior & I recently transfered to a new college. I have no one to hang out with. I am 100 percent positive no one wants to talk to me bc they think im a freshman. colleagues assume im a freshman bc of my petite size saying "you look like a freshman" wtf does a freshman look like & when tf did size determine grade?? when i say hi to people or start a conversation they tend to look @ me like i have shit on my face. I noticed that i'm becoming apprehensive & numb. I dont know what to do in this situation.