19 year old kid with SPD

I am 19 years old and in college. I was diagnosed with SPD at the age of 3 because my parents noticed something strange about me, I was always alone away from the other kids and easily bothered by noise and bright lights.

Now that I'm older I found I've grown out of some of the issues but I find I never had any of the physical issues people usually have. Bad coordination and stumbling etc however I do notice I don't experience pain as much as other people do. but I still find myself easily bothered by light and get overly excited around a group of people to the point I need to go In a room by myself to calm down.

I also hate change and need a routine and need to know what to expect. My mind never stops thinking and I feel I'm always fighting with myself in my mind but I feel afraid to express it to other people because how they might view me differently.