Is heartburn and acid reflux common in very early pregnancy? I NEVER have either but for the past couple days its been so terrible! We started ttc in January for our first baby, and I'm in day 21 of a typically 26 day cycle, so I would literally be only a week pregnant. It seems really early to have any symptoms of pregnancy, but I never have problems with this and can't figure out what else it could be. It would be my first pregnancy so I have no prior experience to compare. Am I just grasping at straws or have you experienced symptoms/heartburn this early in your pregnancies?