Sleeping positions

[Shannonlou]

When to stop lying on your back during pregnancy? Currently 22w3d

I've been wondering this too as 25 weeks today and dislike sleeping on my side. Google says between 16-20 weeks and definitely not during 3rd trimester.
I guess just sleep on your side even if on your back is still comfortable. Get a pregnancy pillow if you don't yet mines a dream :)

Apparently it's better for the blood flow to the baby so start as soon as possible. You'll get to a stage where you can't sleep on your back as you won't be able to breathe but that's much later