29 weeks seems to really be the fun time to figure out how to sleep. I had pregnancy induced high blood pressure in both of my live births, I spent the entire time on my left side. Blah!
I did a cross between augustlan’s and adri027’s pillow arrangement. I used the bean bag pillows under my belly and just hoped that the other pillows would work! Towards the end, before they put me in to be monitored, I had to try to elevate my feet too. I swear, I thought I was going to roll off the bed, I feel certain my husband would have left me there. I already had him sleeping with a window open, in winter.
I also tried to keep one under my shoulder, it seemed to help that unsteady feeling. (until my tummy finally popped out…I swear, no tummy one day, the next, i couldn’t see my feet. I’m sure it wasn’t exactly that way…but it was strange!)
Good luck!