Been in hospital for nearly two weeks and was on a pca morphine i came off it wednesday at 2am and i still feel very spacey n light headed how long wi?

Cause: Why are you in the hospital? Too many variables. If pca is off and you don't get oral narcotics, you should be regaining mental capacity within a few days unless you had hypoxia or trauma.

Several weeks: It sounds like you are still experiencing some withdrawal symptoms which can last a few weeks. I they last longer than that talk to your doctor about referral to a pain management specialist familiar with chronic opiate therapy. You might need to be on something like Buprenorphine for a slow taper, especially if your are still taking oral opiate pain medication.