left side promotes ideal blood circulation to the baby.
the issue with the back starts around 16 weeks, your uterus is heavy and has potential if you are on your back to block off a main artery to the baby
I am 24w iz it ok for me to lay on my back or not .thank for ur answers by the way
You can lay on your back, but it's recommended you do not sleep on it or lay for extended periods of time. IE hours and hours.
Sleeping on your back cuts off circulation to the baby. I'm a stomach sleeper, and obviously I cannot sleep on my stomach. I will lose sleep but better for baby.