I've never heard of that before, it sound a bit ridiculous to me. And I found that if I took 1 tylenol and 1 tylenol PM before bed I could actually sleep for about 4 hours straight. Before that I could barely get to sleep and would turn constantly. And Tylenol PM is safe to take when your pregnant I checked with my Doc., he said the sleeping aid in tylenol is actually just Benadryl. Good luck, I hope you can get some sleep.
You can sleep in whatever position you like, turning any way you like without fear of the cord getting wrapped around the neck from your movements. It is not recommended to sleep flat on your back though. It can cause compression of a major blood vessel behind the uterus, and decrease the blood flow to the baby.
The umbilical cord is around the babys neck at birth approximately 30% of the time. It generally is of no significance. Occasionally, it could be tight enough to cause harm, but there is no way to predict if it will be tight, and turning and your movements have NOTHING to do with the cord being around the neck anyway.
Good luck to you!
I started getting uncomfortable around that time too. i got huge! i too had troubl sleeping and turning over. i had to practically get up to turn over anyway b/c i was so freakin huge! good luck, it is all worth it in the end.
I would listen to the doctor over your mother on medical issues like pregnancy.