Why does chest tightness and shortness of breath occur in early pregnancy?

What causes chest tightness and shortness of breath in early pregnancy? Because of the great changes in pregnant women's bodies during pregnancy, many pregnant women often experience chest tightness and shortness of breath. Many women experience chest tightness and shortness of breath in early pregnancy. If you are full, these symptoms will get worse. In severe cases, walking and doing housework will make you feel like you need more oxygen.

During pregnancy, you need to breathe more oxygen, and your body adjusts accordingly to meet your oxygen needs. The increase in hormones during pregnancy, especially progesterone (also known as "progesterone"), can directly affect your lungs and stimulate the respiratory center in your brain. During pregnancy, the number of breaths you take per minute doesn't change much, but the amount of air you breathe in each time increases significantly, causing shortness of breath.

Later in pregnancy, as the growing uterus puts pressure on the diaphragm, you may find it harder to breathe and feel more short of breath, especially if your baby is high in the fetus or you are carrying multiples.

In the weeks before labor, especially if this is your first baby, you may feel less shortness of breath. At this time, some pregnant women will have a sense of relief - a feeling that the fetus is descending, which is mostly because the fetus has entered the pelvis.