The causes of heel pain in late pregnancy usually include hormone level changes, weight gain compression, Achilles tendonitis, etc., and once discovered, timely medical treatment is required. 1. Changes in hormone levels: After pregnancy, the hormone levels of pregnant women will change significantly, and the metabolism of the body will also change, which will make the Achilles tendon ligaments loose, leading to heel pain in pregnant women. 2. Weight gain: due to the gradual increase in the size of the fetus in the uterus during pregnancy, the weight of the pregnant woman is getting heavier and heavier, and the pressure on the feet is also getting bigger and bigger, and then heel pain may occur. 3. Achilles tendonitis: If the pregnant woman herself has Achilles tendonitis, combined with the above factors, the pain will be more obvious. If the heel pain is obvious in the second trimester of pregnancy, you can consult a doctor in time and follow the doctor’s instructions for reasonable treatment.