Adhd, do I have it and what do I do?

Jet

So, I’m fourteen years old and I think I have adhd. I constantly find myself fidgeting with pretty much anything and everything, I always wanna be moving (even if its only just me bouncing my leg, I just wanna be in motion,) I can’t ever concentrate on one thing (literally having trouble typing this out) and I can’t concentrate on *anything* if there’s an excessive amount of noise or just one noise in the silence, (which makes school ridiculously hard.) My moods change like crazy, and when I’m feeling overwhelmed by an emotion (mostly happiness) I do a specific movement or something that idk kinda helps me? Like clapping my hands or rapidly stomping my feet, (my friends call this stimming?) Now, for the what do I do. I told my parents about this and they kind of just dismissed it. As if there’s nothing wrong with me and I’m perfectly fine, but sometimes I seriously struggle. I just don’t know what to do if my parents won’t listen or do anything about it.