Re: which side is best for baby while sleeping
I had an in-depth discussion on this topic with my doctor a couple months ago. The answer from my doctor is you can sleep in whatever position you want to, as long as you are comfortable, and when you get up, you are not getting dizzy. If you are in the first trimester, it really is not an issue unless you have problems you're being monitored for and are told how to lay down.
The left side of your body has the primary artery (forget the name of it this second) that pumps blood to your uterus/baby and the lower half of your body.
The right side of your body has the primary vein (vena cava) that pumps the blood back up to your heart.
The arteries are stronger and better at pumping blood than veins.
Ideally, you would sleep/rest on your left side because:
1. As you get bigger, the weight of the uterus/baby/fluid supposedly become too heavy and put a lot of weight on your spine causing back pain. Laying on your back is supposed to get uncomfortable. Around 28 weeks is when my doctor says people start complaining about not being able to sleep on their backs. He also says some people sleep on their back until the very end.
2. Your body weight on your left side is preferable becasue the arteries are stronger than the veins; thus, allowing better blood flow throughout your body.
I personally am at 29 Weeks and sleep on my back mostly. I'll roll to whatever side hurts the least in the middle of the night.
If you are on bedrest, or in some sort of distress, they'll want you to keep to your left side as much as possible.
You ask how do you just switch sleeping positions?? Your body will switch sleeping positions for you. I used to be a left-side sleeper my entire life...now I've become a back sleeper in pregnancy. You will sleep in whatever position hurts the least.