I finally got a diagnosis - Breathing Disorder - I was not getting enough oxygen!!
I started doing breathing exercises and last night I got off to sleep without trouble and just a wee bit more energy today.
It also explains why I get so sleepy if I use the computer a lot, especially a PC Game - apparently when you are doing things which require a lot of concentration, especially with computers, you hold your breath without being aware of it and almost stop breathing, not getting oxygen!
Hope this may help anyone who just might have this problem.

