If you apply and get in, congratulations. If you apply and fail to get in, you’re either a reapplicant or onto Plan B. According to AAMC in October 2015, 52,550 applied in most recent cycle, 20,630 started meaning 60.75% failed to start. Although possible to get in after 3 years, it’s best to put forth the strongest, most competitive app in ALL respects (eg GPAs, MCATs, ECs, etc) you can and get accepted first time around. What’s the rush?