Mental Disorder? Im just confused. :(?

I don't think that mixing up numbers is a serious problem because it happens to several people, but there is a possibility that you may have ADD or something similar from the fidgeting and distractions and such. No worries about that. The most important thing is that you maintain a happy lifestyle. That is what should concern you the most. Check out what you really have so that you know what you need to feel comfortable within you because sadness leads to distractions, impatience, and maybe even illusions... I hope I helped you out in some way...