Okay well firstly, universities dont mind if you resit AS modules with your A2 exams. They only mind if you resit a whole year and therefore take 3 years to do your a levels instead of the usual 2.
Realistically, universities usually ask for AAA-A*AA. Unless you're sure you can get 3 As, i'd consider doing some form of a life science degree (which can be pharmacy, neurscience, psychology etc) and they applying for graduate entry medicine, which is 4 years rather than 5. A high proportion of medical students enter medical degrees after having done another degree, so its not rare and universities certainly dont frown upon it.
If you had official extenuating cirmcumstances, the universities might lower their offers