What's wrong with four months pregnant and no fetal movement?

I am now four months pregnant, but I have not felt fetal movement. I want to know what is the reason why I have not felt fetal movement for four months?

Four months of pregnancy, no fetal movement may be felt because the fat layer of the pregnant woman's abdomen is relatively thick, while the fetus is small in size and the range of activity is relatively small, so the pregnant woman cannot obviously feel the fetal movement. Generally, the time when pregnant women feel fetal movement is between 16 weeks and 20 weeks. Due to individual differences, the time when pregnant women feel fetal movement will also vary, so pregnant women do not need to worry too much. However, it cannot be completely ruled out that the fetus is hypoxic in the uterine cavity. Pregnant women should go to the hospital for fetal heart rate monitoring, abdominal ultrasound and other examinations in time to understand the development of the fetus in the uterine cavity.