A girl lifting at the gym?

I'm a 19 year old university girl. I feel like I'm pretty weak (I can only do 1 push up) so I want to start lifting just to make my arms a bit stronger. The problem is most of the guys at the gym at the weighst & lifting machines section really know what they are doing and are pretty buff. I'm 5'4 and have a really girly body. Will I look silly if I try to go work out there? Even worse, will it look like I am doing it to hang out with them?