I was recently in the hospital for 10 days, I was in there for a kidney stone, and to manage the pain I was on a steady dose of morphine and toradol, for the ten days until I could get booked into a surgical suite. I have been out of the hospital for 6 days now, and I am attempting to return to work, but I am having a really hard time with my memory, I can not remember simple details from the weeks before this happened, and I can not seem to get my mind around simple tasks. I work in a technical field, and it involves designing work with rigs and oi/gas wells, so there is a safety concern if I make mistakes . I have been able to pass everything through another engineer to double check my work for now, but is this normal? and if so, how long can I expect to be in this haze?