You could add in a USEM for 2 credits. The 2nd writing requirement is usually able to be fulfilled by a course in your major (there's even a math class that fulfills this requirement), so don't worry about that until later. Do you know what you want to major in? (You don't have to major in Bio to be pre-med of course.) You could take a class in that. Or you could fulfill other general education requirements (humanities, social sciences, history, etc) if you don't have all of those covered from AP credits. Try and vary it up, don't take all science/math or you'll go crazy. A humanities-oriented class would definitely help round out your schedule.