I only have a 3.85 overall GPA (science GPA is slightly higher but still <3.9, my major is biochemistry) I don't yet have any clinical experience besides ~ 20 hours of volunteering in a hospital (it was so boring that I quit after a week...all I did was pushing wheel chairs around and I'd rather spend my time working in the lab). I feel that my GPA is way too low for a competitive MD/PhD program at top schools and I also feel like all the applicants considering such programs are some super stars (crazy volunteering experiences, loads of clubs/sports/talents what not)