Am I just overthinking or did my crush try to avoid me?

I have a big crush on this girl in the classes I go for the past 1 month. She is within 21-23 age range and I am also 23 and I have been talking briefly with her. We just don't get the chance to meet and talk often due to being in different classrooms. The last time we talked was 2 days ago and it was a decent conversation. She is very pretty almost model like whereas I look pretty nerdy in my glasses but have a decent height of 5'9 or 5'9.5 (174-176 cm) which is well above average where I live.
But today during lunch time, I ordered some noodles so I was waiting outside the institute to collect the order and I was listening to songs putting my earphones in my ears. Suddenly i saw her coming in cab for the classes. Idk whether she saw me or not standing there but it felt like probably did see me a bit. After she got out of the taxi and paid the fare, she pretty much ran inside the institute in a hurry. Then i went to the cafeteria of the institute there and was talking with my friends and saw her there. She was with her friends. My friends told me to go talk with her but as she was with friends I was hesitant to talk to her. Idk whether she saw me in the cafeteria or not but she and her friends then went off to their class.
So I am overthinking now whether she is avoiding me or not as she almost ran in a hurry for the classes after getting out of the taxi and then again went to class from the cafeteria with her friends. She seemed comfortable enough 2 days ago when we were talking and she smiled too and said me Hi. Idk whether she was in hurry about going to classes due to being late or something or whether she was running from me. I still do sound a bit nervous while talking with her plus i am scared that what if one of her classmate told her i have a crush on her because 2 of her classmates knows that i like her even though they promised me they won't say about it to her. Maybe i am just overthinking but still it sucks that i have to wait till Monday before I can meet her again and will probably spend the weekend overthinking about this.

1) Your overthinking, judging from the situation she was in a rush or had plans. You have not made yourself known to her as a love interest she likely doesn't acknowledge your one sided love either, step up broski and tell her you like her and wanted to know if you can take her out on a date to know her better.
Mate if she declines; she declines - simples, but don't get hung up on a chick you in a campus full of them.
Oh and like the other matey said, don't gossip, act your age broski.

1) Your overthinking, judging from the situation she was in a rush or had plans. You have not made yourself known to her as a love interest she likely doesn't acknowledge your one sided love either, step up broski and tell her you like her and wanted to know if you can take her out on a date to know her better.
Mate if she declines; she declines - simples, but don't get hung up on a chick you in a campus full of them.
Oh and like the other matey said, don't gossip, act your age broski.