I was accepted to start Jan term at AUC, but because of complexities of selling a business had to delay. As I recall I didn't notify AUC, showedup 1 week late for May term with a certified check for the first semester and was on board.
i thought you're already a doctor? you have to repeat med school? that must suck big time. but at least you'll be able to finance it without loans. good luck second time around should be much easier.