30 weeks refers to 30 weeks of pregnancy, at this time the fetus moves around the navel may be normal, but it may also be abnormal fetal position.
Since, the position of fetal movement itself is not fixed, if there is no abnormality in ultrasound, fetal heart monitoring and other related examinations, it is normal for the fetus to move around the navel at 30 weeks, so do not worry too much and observe the changes in fetal movement closely.
Sometimes the position of the fetus is abnormal, such as transverse position, the position of the fetus may not be the same as most of the pregnant women, but in some cases, the position of the fetus can be changed to normal by itself with the activity of the fetus.
To summarize, it is recommended that pregnant women whose fetus is moving around the navel in the 33rd week of pregnancy should go to the hospital for relevant examinations, and may need to cooperate with the doctor to take appropriate treatment measures if necessary.