Nearly all universities ask for Chemistry, you'd be hard pushed to find one that doesn't. Also, most state that you must achieve the necessary grades (typically AAA) within 2 years.
I'd say your best bet is to get on an access to medicine program and apply, or do a different degree first and apply for graduate entry medicine. Its not over for you, there are still means of getting into medicine, but I don't think you'd stand much of a chance applying for undergraduate medicine.