The muscle pain you describe is what I live with on a daily basis but I also unfortunately get joint pains now as well. Didn't origianlly
There is also an element of mental fatigue with CFs hence the not being able to read, I also had trouble speaking. Light intolerance, food and smell intolerences - the list is endless. As I said I am not and never will be back to my pre illness state but I manage.
The best way I have heard it explained is that your body doesn't process lactic acid as well so when your muscles get the post exercise ache it lasts longer and hurts more tyhen for "normal" people.
Pacing seems to be easy to understand but you have to be very disciplined, you need to remember that little things such as getting dressed, cooking a meal, reading a book even watching TV use energy. As someone who has CFS you only have a certain amount of that energy per day. I use relaxation therapy to put ordered downtime into my day - that doesn't mean having a crafty afternoon nap(it will make you feel worse) or lying on the bed reading - that is still using energy! You need to find a relaxation technique that works for you - I use a system called Pzizz which is downloadable from iTunes. "Book" time into your day to take this realxation time regularly.
Graduated exercise as well needs to be something that is done properly - it isn't something you can rush which is why I said to ask your GP to refer you to a Physio that maybe has some experience with CFS - you only get 6 sessions on NHS AFAIK but even that will help.
Keeping a diary will let you know what you can currently manage and use that as your starting point, if anything if you are needing to have a rest then I would take it back a stage and do less for a couple of weeks. Then plan exactly what you can manage e.g walk to corner shop - and do that every day for at least 4 weeks. Even if you feel like you could do more - don't as that will only take you backwards. Once you can do that confidently for 4-6 weeks then add in another small stage walk to the corner shop and back and then walk to the lampost at the end of your road and back -again for 4-6 weeks.
When I talk about graduated exercise I am not talking about going to the gym or running or going to an exercise class, just basic walking. The more exercise you do the more endorphins your brain releases and the easier it is to cope with some of the symptoms. If you have a bad day you still need to try and maintain the same level of exercise.
Think of pacing as being given a set of 15 teaspoons when you get up in the morning. Each activity you do - making a cup of tea, playing with the children, doing your hair will take a certain amount of "teaspoons" - when you run out of teaspoons you don't get any more until tomorrow. Prioritise how you are going to use your teaspoons, work out if you can make an activity use less teaspoons e.g I used to have long hair - doing it for work was a real pain (literally in my arms) so I had it all cut off into an elfin crop - takes me 30 sec to do now and I don't need a hairdryer or to tye it up - 3 spoon activity down to 1/2 spoon. hoovering the floor - this used to be a real killer for me - solution, sit on the floor to do it (cylinder not upright hoover) and just do 1/4 of room at a time - have a break in between each section. Only do 1 room a week or 1 a day whateve you can manage.
I went from being unable to walk up the stairs in my house (moved bed and everything donwstairs) to being able to walk up the stairs to my office regularly (54 steps I'm in the attic) - it hurts to get to my work office but i know i can do it now.
I found much of the improvements i was able to make came when I accepted my condition - I was diagnosed when people still called it yuppy flu
and I refused to believe I had it as I wasn'y a yuppy!
It has taken me a long time to get this far but it has been worth it, especially as I am finally accepting that it may be better for me to be medically retired from my job (public sector) and consider a new "career" which is less demanding.
Happy to help however I can
Mrs S