milo and bookworm,
me also suffering from loss of slp....Wake up at 2 or 3 am then stare at the ceiling for a long while before can slp again....
Usually have to wake up by 7pm to get ready for work, now delay here and there a bit cos really lack of slp.
For me, it usually caused by tightening of the stomach...Sometimes, middle of the nite, i feel that its so tight that its painful...