I don't know about anyone else, but I'm still having trouble sleeping on my side rather than my back. It's just been easier to fall asleep that way. This is partly because I've been propping myself up on pillows for a few weeks fighting some wicked heartburn, so naturally, side-sleeping while semi-seated is harder.
I have had some improvement in my heartburn the last few nights, and I am getting more consistant with sleeping on my back, but I'm worried:
Have I hurt my baby, starved him for oxygen or the like, by sleping on my back off and on the last few weeks? Keeping in mind that by now I'm sleeping 4 hours tops before going to the bathroom and repossitioning myself anyway?
When I have woken up on my back I haven't felt numbness in my hands or feet like my circulation has been cut off, but I don't know for sure how HE'S feeling, and that's what's most important.
Re: Sleeping on my back?
I'm also 27 weeks along, and I asked my OB about this too. He said that if the vena cava is being compressed to the point of significantly affecting the blood flow (=oxygen availability) to the fetus, you'll be symptomatic: you'll wake up in "fight or flight" mode, with heart racing, possibly sweating, and a general feeling of anxiety. You should ask your practitioner too(!), as it's always good to get multiple opinions (I think). But this advice made me feel better.
He also said that if I'm sort of propped up, so that I'm kind of halfway between being on my back and my side, that can help minimize problems too.
I sleep mostly on my back as sleeping on either side at times makes me nauseous. If you read in the Bradley method husband coached childbirth, the doc says momma will sleep in whatever position in most comfortable and will change throughout the night according to her bodies needs.
Its a little irritating when they turn a few incidences into "no pregnant woman should ever sleep on her back!" There are all these should or shouldn't do's, find what works for you and do some research on either side and make your own educated choice you know you body best. Pay attention to your instincts and be a happy momma
I figure our bodies know what is best. Even though medical professionals say our sides our best, I think our bodies can also communicate what is natural (and best). Women have been having healthy babies for thousands of years and I'm sure more than a handful of those women slept on their backs.
Don't stress over it. At this point in my pregnancy, I'm just glad I'm sleeping well...on my back or side or wherever!!