I just found out I'm accepted at OHSU and NYMC (and probably Drexel, waiting on the letter). I did not get accepted anywhere before May 15th. What is the protocol/etiquette for this? I mean, do I have some fixed time period within which to decide? Also do I "officially" know only once I get the snailmail (I found out about OHSU on the phone and NYMC via email)?