Odd sense symptoms and conditions

Rx for 10mg Flexeril 6/19/08 for severe muscle spasms upper back and neck. Took one tablet 6/19 2pm, one tablet 6/19 10pm. Slept well, but woke up with spasms worse than ever. Took 2 10mg tablets 6/20 7am and slept ALL day - 16 hours in a 24 hour period. This is day 5, 10 mg 3 times a day. It has greatly decreased the muscle spasms, but makes me feel spacey and out of it. Today my wiccan goddess friend asked me if I was stoned - she said my eyes looked funny and my energy "felt chaotic". I didn't tell her I was on Flexeril. Makes me wonder: do I appear more "altered" to others than I feel inside myself? That's bad, because if I have less control than I realize, I probably shouldn't be -- well, driving, for one thing. For five days I had an odd sense of well-being - today I feel agitated. My heart has been racing all day, which it hasn't done before.