In what week do you start having heartburn when you are pregnant?

Everybody is different and can experience heartburn from as early as the day after conception to as late as just before giving birth. Some women can have it for the first trimester only, the second trimester only, the third trimester only or the whole way through their pregnancy with some women having it randomly and without a pattern. If you experience extreme heartburn at any point during your pregnancy you should consult your doctor for the best remedy.