As the third trimester of your pregnancy progresses, you may experience breathing difficulties due to the pressure of the uterus on you diaphragm, a muscle that is essential to breathe effectively. You are short of breath.

If this is your first pregnancy, the discomfort will disappear with the descent of the foetus and uterus in the pelvis. However, this phenomenon will not occur until labor in subsequent pregnancies and you will remain uncomfortable until then.