My main plan currently is to do Computer Science - I know that most top unis want maths for CS but I know I'd hate taking it, so I'm not. One of the (more competitive) computing courses I'm really interested in requires psych, but the grades it wants are 3 A*s which seems rather hard. I am currently working at around a 7/8 for these subjects at GCSE (CS and Drama) even with everything going on , so maybe it'd be achievable at A-levels? I'm not sure, but that's one of the reasons I'm reluctant to give up psych.
I should also add that my medical condition is not necessarily permanent? I have chronic migraines, which, while it is not fun, does have treatments to improve/cure it. Nothing's worked yet, but I'm hoping by y13 and A-levels it won't be (too big of) a factor anymore. though we don't know.