Thanks for the replies.
Flipiddy - I don't recall being bitten by a tick. I just googled tick bite and it looks like it would have been pretty memorable, some of them look nasty!
At the moment I can't ride my bike at all, I tried last Monday and have only just stopped aching. I've not tried any other forms of exercise yet. I just started a photography course at college 3 times a week, even that's a real struggle.
I'm not tired in general, more my whole body just feels knackered like its had enough.
I asked for Mirtazapine because I knew it made you sleepy, my sister takes them.
Bunnyhop - After reading that thread it seems more likely that I do have it. I have read on the net that insomnia can be a symptom, although you would think you couldn't keep yourself awake, I'm the opposite, I can't get to sleep (naturally) no matter how tired I am. When I do, its only for a few hours max.
I found doctors to be fairly unhelpful - once they have done the blood tests to rule out anything 'serious' they are not interested basically.
I found this out today, after my 50 thousandth trip to the doctors. She basically said all the tests have come back clear, there is nothing she can do/there is nothing wrong with me.
Being off the bike and generally not being able to do much is really starting to get to me, I don't even feel like making fun of people on here anymore
I understand why it makes people depressed. I think the fact I don't actually know if I will ever be back to normal makes things worse. I have to keep my hope up I guess!