So I'm 15 weeks on Friday coming. And I've just bought a pregnancy pillow for this exact concern. I've never been a back sleeper, but since I've got pregnant I'm constantly waking up on my back. I've read you need to start sleeping on your left side? And I've tried to train myself to sleep on my side, but I just can't which is weird for me being a side sleeper pre pregnancy. Will sleeping on my back cause any harm? Am I just over thinking this?😂