Lianne,
Have you been to a urologist? Although not incontinence, I was suffering
from EXTREME urgency, pressure, and frequency which was eventually (after
SEVERAL doctors) diagnosed as Interstitial Cystitis. It's an inflammation
of the lining of the bladder and there are treatments. More information is
available on the internet. I really don't know if it's related to my thyroid
problems (Hashimoto's disease). Just a suggestion. Hope you find relief soon.
Also, did you know there is a news group for people with sleep disorders at the
following: alt.support.sleep-disorder
Best wishes, Nancy