Is it normal for my heart to race while pregnant?

Yes: During pregnancy, the way your heart works changes along with the increase in the amount of blood in your body. For most women, their normal pulse rate will increase in pregnancy. Periods of "palpitations" , where you are really conscious of your pulse and it gets fast, are common. You only need to worry if they last for more than a few minutes or make you short of breath or dizzy.

Yes: If you have heart problems, there may be other things you need to watch for.