I agree with Travelinglady. It's possible that you have ADHD, or some other physiological problem. Talking to your parents would be a good place to start, since it is clear that you are experiencing a lot of discomfort. You don't necessarily have to "self-diagnose" yourself when you have this conversation, if you think that will hurt your credibility. Your mum has ADHD, so she might consider that an option anyway when you state your symptoms.