.When I was four months pregnant, I would sometimes feel pain in my right waist when I sat on the bed and couldn't move.

Pregnancy is very difficult for many women, because there are many things to pay attention to during pregnancy and it has a great impact on the body. The main reason is that the pregnant woman's body bears a lot during pregnancy. Some pregnant women will feel pain in the right waist when sitting on the bed when they are more than four months pregnant, and sometimes they can't move. The reason for this is that pregnancy causes the body to secrete too much hormones, which leads to waist pain. The following is an explanation of this matter.

1. Why do pregnant women have back pain?

1. Early pregnancy

After the fertilized egg implants in the uterus, it may cause uterine contractions, and the hormone secretion in the pregnant woman's body will also change, which can cause lower back pain. Generally, the symptoms are mild without obvious discomfort, so there is no need to worry too much.

2. Mid- to late-pregnancy

As the weight of the fetus and amniotic fluid increases day by day, the pressure on the pregnant woman's lumbar spine also increases, and the body will lean backward. In order to maintain balance, pregnant women's waist muscles need to remain contracted and push backwards. Over time, the tense muscles cannot relax, which naturally causes back pain. This type of low back pain caused by fatigue will gradually recover after sufficient rest or delivery.

2. How to relieve back pain during pregnancy

1. Sitting posture: First, straighten your body, keep your upper body straight, place your legs vertically and flat on the ground, and try to get close to the back of the chair. You can put a pregnancy pillow under your lower back, or you can put your legs on a bench that is slightly lower than the chair to reduce the pressure of the abdomen on the waist. Also, be careful not to tense your body too much and keep your shoulders relaxed. Working moms can adjust the height of their desks and chairs while they are working. When you take a break, you can stretch and relax, and don't forget to stand up and walk around.

2. Standing posture: look straight ahead, chin in, chest up and hips in, abdomen slightly moved forward, legs slightly apart. When standing up from a chair, pregnant women should pay attention to straightening their legs first and then standing up slowly to avoid bending over. When walking, the body's center of gravity is placed on the toes, and the toes touch the ground first, followed by the heels. When climbing stairs, pregnant women should also pay attention to keeping their center of gravity forward, straightening their waists, and touching the ground with their toes first. It is recommended to hold the stair handrails.

3. How to prevent back pain during pregnancy

1. Pregnant women should learn to choose a chair that suits them, with a moderate height, preferably 40 cm. When sitting, keep your center of gravity and lean towards the chair back as much as possible to reduce the force on your body.

2. Pay attention to maintaining correct posture. Sit and stand properly, and do not change your normal posture due to physical discomfort during pregnancy. This will change the force surface and cause local fatigue of the body. Do not remain in the same position for more than an hour.