I did chiro and massage with my first and my third. I have been meaning to get in this time, but just... haven't.
I liked it.
You need to evaluate your sleep set up- you probably aren't properly supporting your changing weight distribution. You don't have the muscle memory to support it because it is changing so rapidly, so you need external support, like more pillows. There is a video... hang on... http://www.youtube.com/watch?v=TDTbi4Xb5ec
Oh, and that support belt would fit you just fine, if I recall previous postings about your size. Very stretchy, and you aren't like a super-sized human, even if you are overweight.