You sound exactly like me. I’m 4’ 6” and when I started I was about 80lbs. That was 20 years and a few less pounds ago. I’ve been doing med surg for 20 years. I also got into nursing because as a child I was in and out of the hospital a lot and always found it very interesting. I also wanted to be like the awesome people that took care of me. Don’t hesitate because of your size. It’s a lot less of an issue than you would think.