Hi Tiffany.... I decided to go through ALL questions raised on this site when I saw yours.... I'm an old man now (61...) and I was only diagnosed at the age of 44. There was a delay with eventually being diagnosed, this due to an ignorant? GP in my (dutch) past as well as 'starting all over again' after having emigrated to the UK in '95.
However, in hindsight, I'm sure that my first symptoms had started in my early teens, and one of these that I remember very well, and caused me a lot of uncertainty/anxiety!, were the non-volunteerily movements of the pupils in my eyes!, in my case from the left to the right, which I, 'starting teenager', noticed/observed while in front of a mirror not knowing why this was happening.... This was next to some other unpleasant 'MS things' by the way, although I had never heard of MS at the time! I was even operated upon one of my eyes, this to shorten one of the (stretched) eye muscles, as well as wearing tinted glasses, this to 'protect' me from daylight and to 'give my eyes a break'.... The years at secondary school were however therefore enormously affected in a negative way (if only I would have known what I was dealing with!), but I had learnt just enough English to 'chat up' my now wife several years later during an holiday on Crete!
And and and......, and that's why I started writing it all down at some point, this to remember things when I am no longer in the possession of a memory (...) and 'to tell others' that they are not on their own! Look after yourself! Regards Jos..... (now what was the other thing I promised my wife I would do....?)

.....you're welcome Tiffanie..... I was filling the dishwasher btw....., and apologies for not spelling your name correctly! Although I wrote a lot, I still forgot to mention the fact that I too had a period of temporary blindness in one eye when I was in my early twenties.... You take care 😉

Joe and Angelique, I hope y'all are doing well overall-- thanks for responding 🤗