If you take additional classes, make sure to send updated transcripts to any medical schools where you are still under consideration. Other than this, be prepared for a lot of waiting by the mailbox. When a decision is made, most schools will place you in one of three categories. They will offer you a position, they will reject you, or they will place you on their wait list. Do not be discouraged if you are placed on the wait list.
Many schools hedge on applicants who are somewhere in the middle.
Because of this, there is usually a lot of movement off the wait list. If the class becomes completely filled and you have not been accepted, they may place you on their alternate list with a given rank. This usually happens around May, after which replacements are selected in order as needed. I know it probably sounds weird, but through all the waiting I developed an anthropomorphic fantasy of my mailbox. I felt like my mailbox was some woman that I was in the middle of a bad relationship with.