Sciatica is a radiating pain that starts in the lower back before being influential along the sciatic nerve in your lower body. Expectant mothers often experience sciatica.
What is the reason of this?
Sciatica during pregnancy usually occurs later in pregnancy and is usually the result of your uterus putting pressure on the enlarging sciatic nerve, starting in the lower back and running down your butt and down your legs. As the baby turns and prepares to be born, its head may reach directly into your sciatic nerve, which can make the contractions more intense.
Tips
Stretching is always good for back pain, but the most important thing you can do is rest. Radiating pains may persist for some time after birth, but they usually disappear very quickly.

