I agree with Nike. Also, childhood hyperactivity can go the opposite direction as you grow older, and turn into fatigue instead. Yes, mental fatigue can be a symptom of ADHD! I bolded the ones that sound most like ADHD as far as I understand. Maybe you can sort those and others into categories.

Have you tried any treatment suggested by your doctor/psych yet (lifestyle/coaching/counselling/medication)? If not, then maybe give it a shot and see if it helps with your struggles. You might be surprised. In any case if you do have ADHD, please don't miss a chance to catch it when you're younger. It gets harder and harder to adjust to as you get older, without setting up a plan to deal with it. I hid it well as a kid it seems, but over time it's done some serious damage to my career and indirectly affected my social life as well.