Thanks for your reply SarahH....
I think that is a possibility... that I overdid it.A bit off topic, but I find if i sit for too long, my back starts to hurt. Its been hurting more since Saturday and today was a bit better, although i had a strange "electric" pain down my arms into my fingers after sitting at the computer for a couple of hours... Certainly nerve pain, although it only lasted about 10 mins. Strange as I haven't felt that kind of electric pain for quite some time and I started worrying again, although not massively.
This morning I woke up to my old telephones alarm going off at 7am, I then decided to stay in bed until 8am but not sleep, just relax. I find if i am awake i dont get those nasty jerks and thats how it panned out... no jerks. Nice!
I also downloaded some software for my phone which analyses your sleep by movements and noise. Interesting to see how much deep sleep you get. Thought it might be useful to see if theres anything out of the ordinary with my sleep patterns, but so far nothing major.