I know how you feel. People think I'm stupid for wanting to be at Meharry instead of UCSD, but the experience was so amazing. I felt comfortable there. The acceptance range becomes a waitlist after may, when all the seats are sent out and people start withdrawing. Do not think that you are not up to par, because they considered you worthy of an interview. Remeber they get 7000 applications, send out 700 interviews and the class size is 80, 20 of the 80 seats are for their post bac students. so technically it is 60 seats. But I would remain confident if I were you.