Occasional heavy lifting by pregnant women may have some effect, but it depends on the actual situation of the individual. In the early stages of pregnancy, when the embryo is still unstable, it is usually necessary to avoid lifting heavy objects, because lifting heavy objects will increase the pressure in the abdominal cavity, which may lead to contractions, making the fetus lack of oxygen, and may even lead to miscarriage. In late pregnancy, the pressure in the abdominal cavity increases due to the larger uterus, and lifting heavy objects may lead to placental abruption or even preterm labor. If you experience any abnormalities after lifting heavy objects, such as abdominal pain and vaginal bleeding, you should go to a regular hospital and follow the doctor’s instructions to adopt appropriate solutions. If there is no abnormality, you can first observe, do not need to worry too much. It is recommended to rest more during pregnancy, do not be tired, try to avoid lifting heavy objects, do not do heavy physical work and strenuous exercise, at the same time to strengthen the diet and nutrition, maintain a good state of mind, is conducive to the healthy development of the fetus. If there is any abnormality during pregnancy, you should go to the regular hospital in time, do not use medicine privately, so as not to cause damage to the body.