My two cents, don't rule anything out. I had a SO with adult ADD and medication made a world of difference. That's just one person, though, and everybody's different. Do talk to a doctor if you feel like you might have adult ADD. It's a very real thing, and there are lots of treatment options, both pharmacologic and not.
Now I've worked for a bit and have accepted that I'm not wired in a way that will let me be an excellent student (in the traditional sense) without hating myself I have a lot more appreciation for my strengths and weaknesses. The biggest benefits to me post meds have been getting enough sleep, exercising and meditation (even just writing stuff in my mind down) - I'd get all that in shape before I'd go to a doctor if I was you.
Sorry I can't give a better answer! It's a question best left to your GP, I think.
I built a morning and evening routine app (Routinist) to help professionals schedule habits/goals into their days. I did not have ADHD in mind when I built it, but around 1/3 of the positive feedback I get through emails / reviews has some form "I have ADHD and this helps me".