Can my college reject me due to medical reasons having adverse effects on my GCSEs

During yr 11 and end of yr 10 I experienced a medical condition that (in my doctors words) “severely effected my capacity to learn” and effected my attendance, as a result I ended up getting 6s and 7s instead of the straight 8s/9s that I was predicted. My college are now rejecting me from my course despite the doctors letter and proof that I performed well in mocks and had the predicted grades due to me getting a 6 in maths when a 7 is required to take a level maths and chem. I have the chance to appeal, but unsure whether I will gain anything out of this. Just extremely frustrated as I had no control and was wondering if anyone can advise me on how to go about this. I have looked at resitting my maths gcse in November as could comfortably get a 9 but the college say that would be too late. It has always been my goal to go to med school, but unsure what route I should now be looking at taking. I appreciate any responses.

During yr 11 and end of yr 10 I experienced a medical condition that (in my doctors words) “severely effected my capacity to learn” and effected my attendance, as a result I ended up getting 6s and 7s instead of the straight 8s/9s that I was predicted. My college are now rejecting me from my course despite the doctors letter and proof that I performed well in mocks and had the predicted grades due to me getting a 6 in maths when a 7 is required to take a level maths and chem. I have the chance to appeal, but unsure whether I will gain anything out of this. Just extremely frustrated as I had no control and was wondering if anyone can advise me on how to go about this. I have looked at resitting my maths gcse in November as could comfortably get a 9 but the college say that would be too late. It has always been my goal to go to med school, but unsure what route I should now be looking at taking. I appreciate any responses.