Heya, this sounds quite painful - im sorry u have to endure this. i am obviously in no way a trained medical professional, but i would like to help in any way possible. some advice that may it not be helpful: often u may treat symptoms as part of different illnesses, but in reality they may all link together for one illness. that may narrow things down?
Regarding dizziness, that is a severe issue being paralysed etc and needs to be sorted ASAP. have u tried being checked for POTS(
Postural tachycardia syndrome)? Heres the NHS link:
https://www.nhs.uk/conditions/postural-tachycardia-syndrome/Regarding heart pains and palpitations, as much as i hate suggesting this bc i get told this all the time, could it be linked to anxiety in any way?
Confusion, fatigue and memory problems - again, could be anxiety (hate to suggest that bc it probs isn't but gotta rule it out). Any heart problems running in the family?
Fluctuating weight could be anything i guess. Not sure why, but diabetes type 1 comes to mind. Just to rule it out, perhaps get checked for that?
Im sorry the drs have been no help, i get that too. Hopefully I have helped in some way. i don't want to worry you abt anything and there is a chance i have said something that isn't quite true due to me not having much medical knowledge- I'm only a teen lol. I wish u luck on ur journey