I was waitlisted at all the schools I interviewed at but I got accepted to all of them within a week or two of each other. Don't lose hope in June and July if you have not been accepted yet. Although, I did start applying to Masters and Post Bacc programs about that time. Best advice possible is to get everything in early, write as many letters to the admissions staff and dean as humanly possible professing your enthusiasm for medicine at their school and, finally, be patient.