Doing squats during pregnancy is great for low back stretching and quad strengthening. Go into a squat and make sure you are centered. Use your arm to push and stretch throughout your side body. This is going to help with all things pelvic related, motion, and even sciatica when we're trying to stretch out the tissue through this zone. Switch and do the other side as well. Make sure you take your time to get a nice big stretch - creating movement!