when i was in the 2nd trimester, i was awake at 3:00am on the dot! Everynight. Now that edd is getting closer I'm up at least once an hour, if not to go to the toilet, its just coz I'm thirsty. It can be one or the other, or both! Frustrating, but like someone said, its too cold to be up and about at any hour of the night, so I get back into bed and snuggle up to dh, coz he always seems to be warm!