I think algy_lacey has taken the words right out of my mouth.
If you honestly believe you could get AAA if you resit, and you want to do medicine badly enough then maybe resitting is an option. There are places that would consider you.
Doing a different degree is another viable option and it can open up other avenues if you later decide medicine is not for you. I remember reading somewhere that if you are going for grad entry medicine that it is better to do something that stands out a bit e.g. anatomy, physiology etc rather than biomed, but i canīt find it at the moment so donīt do that just because of my say so! I respect people doing biomed because i could never do it myself, and would find it disheartening being on a course where so many people wanted to do medicine. At Southampton my friends doing biomed all applied for medicine at the end, and only one of them got in. However that isnīt to say biomed isnīt a good option, it prepares you very well for medicine.
If i hadnīt got in after resitting, i would have gone and one a midwifery degree if i had got in, or an english lit degree because i love both areas of study and could see myself doing well. The thought of having to get a 2:1 in biomed scares the beep out of me!
Good luck whatever you decide, at least there are people with different opinions here to help you
