GCSE's to A-Levels

Im still unsure about what i want to do after my GCSE's, study wise, i know i want to stay in school for a-level but my school is very selsctive in sixth-form and i fear I may not get back in, as they require the sum of all top 8 subjects to be above 56 (so basically 6's and 7's). I really dislike maths, mainly because of the teachers ive had, but I would love to do something to do with med at uni. I am not the greatest student and my initial options for A-Level were 1)Bio 2)Chem 3)Pshch and Maths as a reserve, I put maths really out of neccesity but i hope i never have to touch that subject after my exams. My grades for subjects are (from high to low) Geog-9 Physics-8 RS-8 Biology-7 Chemistry-6 German-6 Drama-6 DT-6 Maths and Eng-5. To be honest, I really hate maths mainly due to my teachers over the years, and due to me being in the bottom set from years 7-11 and getting the worst pick of teachrs, but that'll have to do. The problem is I didn't apply to any other sixth forms and its probably too late to do so now. Any Advice?

you won't need to do maths a level to get into medicine or related courses, bio and chem is the requirement, but you will need a grade 7 in gcse bio and chem, and either grade 6 or 7 (depends on the school) in maths to do those a levels.

does your school only take into account total score or also individual subject grades based on a level choices?

it seems like you are good at geog - have you considered doing it for a level if you enjoy it?

fyi - some schools let you turn up on gcse results day and can offer you a place for sixth form (but check the minimum requirements first!)

I have considered geography, but seeing as they have already made us pick our options, i doubt there will be any space in the course seeing as i didnt 'reserve' a spot. I'd like to know more about maybe going to another school with my results, and am thinking of going to my brothers school, but I don't exactly know the process of applying on results day. Do i go to the school? E-mail them? (I have emailed them before and they told me that i can come on results day but I don't know if i go to the school or what?) If you know anything further, please let me know.