Back pain is quite common in pregnancy with most women experiencing mild to moderate pain in the lower  or upper  back area in pregnancy. Usually, it just signifies that your baby is growing inside you. But in some rare occasions, it may indicate some serious complications . Back pain is believed to be more common in twin pregnancies .
Although back pain can occur anytime during the first, second or third trimester, mild chronic lower and middle back pain is considered one of the less common early symptoms of pregnancy , often resulting from the hormonal changes occurring in your body . It is often accompanied by other symptoms like nausea, vomiting, gas, heartburn, constipation, fatigue and headache in the first trimester.
It is quite normal to experience back pain after pregnancy due to the hard work associated with delivery as well as the body changes after childbirth .
Light exercises like pelvic tilts , walking and stretching can help. But, avoid forcing yourself to exercise too hard as it may strain the ligaments further or harm the baby. Here is a simple exercise technique to help ease the pain :
This exercise helps to strengthen your muscles; but be careful not to put too much pressure on your back or you may hurt it further.
Water exercises and swimming are good for your back as well (make sure to avoid the styles that are likely to strain your neck and back) .
There is a lack of scientific research regarding the safety of using natural back pain cures, like devil’s claw, in pregnancy . So, it is safe to avoid these herbal remedies.
Pain relieve medicines are usually not recommended to pregnant women as they may increase the risks of various complications . It is recommended to talk to your doctor before considering using any pain medication for fighting back pain.
Sciatica is a relatively uncommon pregnancy complication related to the sciatic nerve, occurring due to a herniated disk in lower spine. Severe lower back pain radiating into the thighs and buttocks is often mistaken for sciatica. But, sciatica is characterized by leg pain that is usually more severe than the lower back pain along with a tingly numbness in the knees, foot and toes .