Thanks for your responses.

Mental note to self - do NOT get a cold, flu, or virus of any sort!

Glenn, as for the increase in Tramadol, I'm currently on 2 per day, and my GP has told me to use as much as I need but not exceeding 8 per day. So, there is plenty of room for me to use them if I need extra to get through a hard week or so. Thank you for your answer though, appreciated.