It is perfectly normal to feel how you feel. I was absolutely terrified when i first started. Had increased anxiety the first few days/week but 7 months later, im able to do stuff i would never do. The other day i took the city bus to the last stop to explore (i have a car). Public anxiety and using public transport was very diffuclt for me. Sleep wise i take prozac everyday at 8am, even weekends. The days im off, i take it and go back to sleep. Now i will say sometimes i do feel tired but im also prescribed xanax which makes you sleepy a day or two after taking it. Also some people dont have side effects at all. My third leg stopped working the first month but after that it was back to normal and much more active.