I think i might have a mental illness?

when i was little, i used to get really nervous about stupid stuff, like i would check and see if my bag was zipped like once ever 10 minutes, or i would count my stuff and make sure a had all the stuff i brought like every ten minutes. now i no longer do that but i do think of stuff i want to look up and keep big lists of stuff that i want to look up. like if i see a movie and i want to look at the reviews i try to remember, or if i think of something, ill make lists in my head and then go write them down so i wobt forget cuz i dont want to look them up. but then ill leave and think of more thibgs. and of a go to write them down and forget one i feel like crap. i also keep giant lists of movies i want to see or apps i want. if i dobt write one down ill get all nervous. im not a wierd nerd or anything btw. is this have a name, cuz once a saw in sports illustrated about a soccer player who had to keep all his shirts in order. and it said there was some name for it. thanks