I get the heart palpaltations, too. Ive had them with every pregnancy, and it is normal for me, but It can be a symptom of thyroid issues or other (minor) issues that could cause you to be miserable. Are you taking an iron supplement? You do want to be sure to right now, as you don't want to get anemic, which can also cause this symptom.Otherwise, I agree with what Tina has said above. By the way, your blood pressure may come up as being completely normal when checked, but if we stand still for too long, get up quickly, move too fast, get too hot, etc, our blood pressure will suddenly rise or fall, cause crazy symptoms. It is all usually caused by the extra blood volume in our bodies throughout pregnancy.