Thanks for your replys they are very helpful.

One of the responses I seem to have to overdoing it seems to be not being able to sleep. So Mon Tues I went to work and it was a little tough coming back from holiday but I felt good after, then wed I had the day off and took it quite easy but I had a bad headache on and off for most of the day starting early morning. I felt ok other than the headache That night I couldnt sleep but the previous 2 nights I slept well. So I'm thinking did I overdo it on the first 2 days or just recently I wonder if its pain stopping me sleep, even though it felt ok when I woke...

Its really so confusing trying to read this stuff and act accordingly.