Your doctor is absolutely correct on this one. Palpitations are fairly common anyway in the general population, and much moreso with MVP. Add pregnancy and they become almost unavoidable and are completely normal. Only if you were to experience significant symptoms (prolonged, rapid, forceful beating and/or lightheadedness) would you require any sort of medical intervention, and even then it's usually just a hormone/crowding issue. However, with symptoms such as I just described, it becomes more difficult to ignore, especially in pregnancy, and there are things that can be done to minimize that sort of thing if it should take place, which is fairly unlikely.
I certainly hope this is helpful and that you have an otherwise uneventful pregnancy. Congratulations!
John Kenyon, EMT, CCT
Non-invasive cardiology tech, Emergency and Critical Care technician, Critical Incident Stress Mgmt. specialist