Feeling tired in the second trimester is a normal sign. Because the uterus enlarges more significantly in the second trimester, the pregnant woman’s body is bulkier and therefore slower in terms of movement. The fetus is bigger, and the pregnant woman’s body weight will increase. Usually try to pay attention to rest, do not overwork, do not stand and walk for a long time. These can cause back pain and back pain, try to take a suitable position to rest. If you feel the strain is more serious, you can use massage or bath to relieve the symptoms of soreness. In the second trimester, you also need to take calcium supplements in time and eat foods with high calcium content in moderation. Insist on walking every day, which is good for promoting blood circulation and can relieve the phenomenon of back pain and back tiredness.