limitations are getting to me..

I don't know how long it will take to get back to a normal life style. The limitations of the back injury are getting to me.
I felt ok yesterday so I drove to the bank not 5 min
was in the bank standing for about 5 min,
drove to library not even 5 min,
was in library not even 10 min,
drove home not even 5 min.
spent rest of the day and today on pain killers and bed rest.
not even a full 30 min out of the house and i am still paying for it.
i miss physical activity soooo much it is getting hard to stay positive on bed rest.