It’s estimated that more than half of women will experience lower back pain at some point or another during their pregnancy. Lower back pain is a normal and natural part of pregnancy, and while it can be uncomfortable and in some cases difficult to deal with, the good news is that it tends to dissipate once your baby is born.
It’s important to understand a little bit about when lower back pain occurs during pregnancy if you want to know what causes it. In the early stages of pregnancy, lower back pain is usually caused by an elevation in the hormone progesterone. Progesterone does a number of things to a woman’s body. One thing that it does is to soften the ligaments and the discs in your back, as well as muscle tissue. Those are the parts of your back that support your upper body. When they are softened because of an increase of progesterone, you might experience pain or even muscle spasms from time to time. This is especially common during the first trimester.
This early pregnancy back pain tends to disappear around the 20th week of pregnancy or so. This gives you a few weeks to breathe before other changes happen that will possibly lead to more lower back pain later on during your pregnancy.
The other time during pregnancy that lower back pain tends to be an issue is in the third trimester. During the third trimester, your baby is growing. Your body is changing, and rapidly. Your center of gravity is adjusting, which causes the muscles in your lower back to have to work a different way than what they did before. This, of course, causes some pain.
You can get some relief from this pain with things like back-strengthening exercises, including mini crunches and pelvic rocking. Getting enough sleep as well as paying attention to your posture can help reduce the amount of lower back pain during pregnancy, as well.