I really really really want to be a pediatrician, i get good grades, but i think I'm to shy, i hardly ever talk to anyone and i get really nervous going to social things. i have 2/3 years until I'm going to uni, do you think i can change? how?

I want to be a pediatrician also. I used to be very shy, especially around kids ( i didn't feel comfortable around them). I started volunteering at Children's Hospital and now I'm getting over it. Being in a setting that I will be in in a few years has helped. Try volunteering in a hospital or doctor's office.