Could I do medicine?

I’d previously been set on veterinary medicine but Ive decided to explore my options. Obviously, human medicine was one of my first ideas, but unfortunately I know next to nothing about the profession or the application process. I’m currently studying A levels in biology, chemistry and English literature. I’m aiming for AAA and I’m trying to push either English literature or biology to an A*. My GCSE grades are A*A*A*AAAB (if that’s of any relevance). Could someone please enlighten me about the medical profession, universities and the application process? Any information about it at all would be greatly appreciated. Thank you.