Well I was only 5 mins in the end!
I will post in several large chunks!
First things first I think its important for you to realise ME is much more than tiredness, it effects different people in different ways with varying degrees of severity.
There are some good websites out there which I suggest you have a look at, to begin to understand the condition a bit more, for example www.meassociation.org.uk/ and www.afme.org.uk/.
The basic symptoms (although not everyone experiences all of them) are:
Overwhelming and persistent fatigue or tiredness, especially after doing things that didn?t used to make you feel exhausted. You may notice the fatigue straight away or it may take a day or two to kick in and is not relieved by rest. This delayed reaction is a distinctive feature of M.E. which can help doctors to make a diagnosis.
Feeling generally unwell or malaise which is similar to feeling like you have the flu. A sore throat with or without swollen glands.
Pain is common and can be felt as aching in the muscles and joints, pins and needles, muscle twitching and headaches or migraine.
Sleep difficulties such as needing to sleep excessively or not being able to sleep, unrefreshing sleep, waking in the early hours, light, dreamy, restless sleep and sleep reversal (for example, sleeping from 4am till midday).
Problems with thinking such as concentration difficulties, memory problems, difficulty finding the right words and problems organising thoughts.
Problems with the digestive system such as nausea and loss of appetite, indigestion, excessive wind, bloating, stomach cramps and alternating diarrhoea and constipation.
Problems with the nervous system including poor temperature control, sweating, dizziness and difficulties with balance and vertigo.
Increased sensitivity; to alcohol, medication, some foods, bright lights, noise and odours.
Now people rarely have every sympton and some people have a lot more than others. Also severity can vary hugely. Some people manage to hold down full tiem jobs as long as they look after themselves (this is where my health currently is), others can only work part time, some can't work at all. Some people have been bed-ridden for 10 years, others in wheelchairs or using sticks, whilst some can walk a few miles as long as its a "good day". Some people "get" ME, are ill for a year or so but fully recover and are never ill again, whilst others (like me) will relapse (sometimes severely) during times of stress/work pressure/general ill health.
You also get "good" days and "bad" days, on a good day you feel so much better that if you are not careful you end up doing too much and as you often get delayed reaction to overexhersion you wont feel it to 1 or 2 days time when you will have a really really bad day! This is the trap many fall into, the trick is striking a balance between doing enough to aid recovery but not doing too much as this will put recovery back.