Don't give up! I'm sure you want this very badly. Record the lectures and listen to them again later. Study harder than you ever have. Use all different methods. I memorized more bones playing anatomy arcade online last night than I have studying my textbook. Study using all your senses and you can make it! (((Hugs)))
During lecture I've learned to go to the page that the teacher is lecturing on and highlight and make notes in the book. It is helpful to study later since I remember better what she was saying about it and then I have the text in front of me to refer to as well.