Life with Aspergers

I've learned that with years working behind the scenes, and apparently this includes the drive-thru at McDonald's, I have lost all ability to exchange money in a public environment.  I work now as a teller in a bank and have made two major mistakes.  One, I will blame on the system we use, and the other is because my brain had a "spasm" we use.  I was counting money today and said things like "cheese" when counting.  The "member" said that he was counting with me and that he knew I was right with what I was saying.  I was wrong.  I was jipping him and didn't know it.  I tried to explain to my coworker what was going on and still didn't make much sense.  My medication ran out for my seizures/migraines and was given a different release pill but have been given to the conclusion that I should wait until going to my new neuro before taking it.  All I know is that I have been making more mistakes of this measure lately.  I just want to be normal.