The most dangerous drug in the world: 'Devil's Breath' chemical from Colombia can block free will, wipe memory and even kill. 1  Scopolamine often blown into faces of victims or added to drinks.
To summarize, it appears the best position is left side, followed by right side. After 16 weeks it's best not to sleep on your back, and you probably won't sleep on your stomach. (One way to avoid sleeping on your back is to sew a tennis ball into the back of your pajamas; this works for people who snore, too).
A new study shows that nine hours of sleep is the right amount for pregnant women, especially in their first trimester. The study polled 1,200 pregnant women on how much they slept per night. Here are the results: 20.5% slept 9 hours. 55.2% slept 7-8 hours. 13.7% slept 6 or less hours per night. 10.6% slept 10 or more hours per night. Too little pregnancy sleep. As shown by the study, most pregnant women are not getting enough sleep.