extra time in GCSEs

I'm in no way a professional or been in your shoes. So first of all I hope all this gets better for you, as you seem to be a bright student from what you have said because of that I would definitely try to get the extra time. As it's in place for students to reach their potential not limited by factors not caused by themselves. It's better you try then feel like your being ungrateful as it is the schools job to help you.
I hope your successful and achieve your grade 9s and 8s for your GCSEs.

so this might be a lil' lengthy but pls bear with me
i've had multiple GP appointments regarding symptoms (similar) to those of OCD, and this is an ongoing thing (therapists, mental health support in hospital + school etc.) and the school is aware that in my first set of mock exams at the end of year 10, i really struggled with the pressures of the exam for a multitude of reasons;
1) i need to cross words and letters out if they don't 'look right' and this causes me to waste obscene amounts of time on what letters or words in my mind 'look right', and this leaves less time in my exam (on top of me not wanting to write on a page with lots of crosses on because that is equally messy),
2) secondly i have to do rituals ALL. THE. TIME. in exams like counting to some random number like 9200, zoning my ears out for 30 seconds on edge, having to click my ankles 7 times in 10 seconds then 14 times in 10 seconds and so on, it becomes a bit of a mess to say the least, and this also literally stops me progressing with the exam (including writing anything down or thinking about the answers)
3) thirdly, because of these rituals and the fact my writing speed is naturally slower, i finish the exam much later than everyone else, which leads me to occasionally cry/stress/start doing more rituals to get rid of my anxiety, because i feel like everyone's mocking me / laughing at me / judging me etc etc.
4) on top of all of this i have an extremely slow processing speed, although this has never been tested nor do i have a learning difficulty (to my knowledge) but i know it takes me ages to even understand what the word 'the' means
there's more reasons but they're the main 3, and on top of this i'm in the midst of investigating debilitating tiredness and dizziness, on top of muscular pains, sleep problems, and a difficulty concentrating (along with many more), these symptoms have started since around august/september last year when i was ending year 9/starting year 10. me, my family and the gps are now believing it is likely it could be ME/CFS, which i'd advise any of you to look into but it's basically chronic fatigue
ive had loads of blood tests, and tests for gluten and lactose because of pains i get, but it's starting to look like the pains i get are more anxiety related from (the possible) OCD disorder that I have, and that the extreme tiredness and dizziness is from ME, however little of this is confirmed (although i do have he symptoms)
anyway, the SENCO of our school pulled me out and told me i'm eligible for a quiet room through the duration of my november mocks (this year eek) as well as potential supervised rest breaks too. i think this is because mental health related stuff is allowed stuff like this, whereas the 25% extra time which i need is mainly allocated on the basis of a learning difficulty (like autism/dyslexia/dysgraphia) but pls feel free to correct me on this as well
so whilst that's good and i don't want to come across as ungrateful for those immense privileges which i need, i can't actually finish exams on time ever (as in missing 40 mark chunks out even though i literally DO NOT STOP WRITING except for when i have to do my rituals)
they say they'll do tests but it may not be awarded to me because a) i'm a high performer predicted mainly 9s and 8s and b) the OCD like symptoms don't warrant 25% extra time in my exam
so my question is: if i don't pass the tests to qualify, is it good enough to make the suggestion that i do have a potential chronic illness and that this is undergoing investigation from GPs and paediatricians, or should I just try with what I have?
tysm if you've read all of it and feel free to and please do respond if you have any advice on the matter!

so I was in a similar situation to the pain your feeling as I have issues with my thumb which warranted the use of rest breaks for reconvey from the fatigue and pain, extra time wise me and many of my friends have all done test within school where they refused to give us extra time as we were not 'eligible'. we all worked out that if you ask you doctor to write up a letter saying so and so's medical issue will cause a like requirement for this specific extra time and the school couldn't refuse. I hope this helped

so this might be a lil' lengthy but pls bear with me
i've had multiple GP appointments regarding symptoms (similar) to those of OCD, and this is an ongoing thing (therapists, mental health support in hospital + school etc.) and the school is aware that in my first set of mock exams at the end of year 10, i really struggled with the pressures of the exam for a multitude of reasons;
1) i need to cross words and letters out if they don't 'look right' and this causes me to waste obscene amounts of time on what letters or words in my mind 'look right', and this leaves less time in my exam (on top of me not wanting to write on a page with lots of crosses on because that is equally messy),
2) secondly i have to do rituals ALL. THE. TIME. in exams like counting to some random number like 9200, zoning my ears out for 30 seconds on edge, having to click my ankles 7 times in 10 seconds then 14 times in 10 seconds and so on, it becomes a bit of a mess to say the least, and this also literally stops me progressing with the exam (including writing anything down or thinking about the answers)
3) thirdly, because of these rituals and the fact my writing speed is naturally slower, i finish the exam much later than everyone else, which leads me to occasionally cry/stress/start doing more rituals to get rid of my anxiety, because i feel like everyone's mocking me / laughing at me / judging me etc etc.
4) on top of all of this i have an extremely slow processing speed, although this has never been tested nor do i have a learning difficulty (to my knowledge) but i know it takes me ages to even understand what the word 'the' means
there's more reasons but they're the main 3, and on top of this i'm in the midst of investigating debilitating tiredness and dizziness, on top of muscular pains, sleep problems, and a difficulty concentrating (along with many more), these symptoms have started since around august/september last year when i was ending year 9/starting year 10. me, my family and the gps are now believing it is likely it could be ME/CFS, which i'd advise any of you to look into but it's basically chronic fatigue
ive had loads of blood tests, and tests for gluten and lactose because of pains i get, but it's starting to look like the pains i get are more anxiety related from (the possible) OCD disorder that I have, and that the extreme tiredness and dizziness is from ME, however little of this is confirmed (although i do have he symptoms)
anyway, the SENCO of our school pulled me out and told me i'm eligible for a quiet room through the duration of my november mocks (this year eek) as well as potential supervised rest breaks too. i think this is because mental health related stuff is allowed stuff like this, whereas the 25% extra time which i need is mainly allocated on the basis of a learning difficulty (like autism/dyslexia/dysgraphia) but pls feel free to correct me on this as well
so whilst that's good and i don't want to come across as ungrateful for those immense privileges which i need, i can't actually finish exams on time ever (as in missing 40 mark chunks out even though i literally DO NOT STOP WRITING except for when i have to do my rituals)
they say they'll do tests but it may not be awarded to me because a) i'm a high performer predicted mainly 9s and 8s and b) the OCD like symptoms don't warrant 25% extra time in my exam
so my question is: if i don't pass the tests to qualify, is it good enough to make the suggestion that i do have a potential chronic illness and that this is undergoing investigation from GPs and paediatricians, or should I just try with what I have?
tysm if you've read all of it and feel free to and please do respond if you have any advice on the matter!