I didn't say hi to her?

[Taurus the bull]

I might be just getting paranoid about this because I like her and I'm pretty sure she likes me back. I think she might be mad because I didn't say hi to her.
Well this morning I was in a hurry to get to my next class so I cut through campus. While walking I subconsciously turned my head, probably because somebody was looking at me. Since I was in a hurry it's kind of a blur who I saw and just turned my head back in the direction I was walking.

So I'm probably just being paranoid but I feel like I might of sent a wrong signal and I should say something to her via text or Facebook and apologize if I did see her and didn't say anything.

Should I? Or should I just let it be since I'm not totally sure?