What it is: Sometimes when a pregnant woman makes a sudden movement like kicking in her Zumba class or lifting her knee while running, she'll feel a sharp pain or long-lasting dull ache just below her pregnant belly. The round ligaments surround your uterus inside your pelvis, and as your belly grows, those ligaments stretch out to support the weight, like rubber bands. When they get overstretched — youch! The pain you feel is the result of the tugging on your nerve fibers.
How it affects exercise: When exercising, wearing a maternity compression band can help support the weight of your belly.