As long as you have biology and chemistry, your options are almost unlimited. However, there are a few med schools that prefer if you have at least maths or physics—but I wouldn’t exactly say you’re ‘lowering’ your chance. It’s a bit early, but if you have any particular universities in mind that you’d like to apply to next year, I’d recommend checking out their entry requirements to see if they specify any preferences.
Apart from that, good luck.