Towards the end of my pregnancy I had to prop up pillows and lean back on them to sleep - it was the only way I was comfortable, and it helped me to get more sleep. I also cut my hours at work back a bit so I could take some naps. Then, after the baby came and the most sleep I got at a time was an hour or two, I almost missed the days of tossing and turning and getting up to go to the bathroom!