Brief Answer: Heart palpitations usually aren t serious or harmful, eventhough you should make some further laboratory exams and an ECG. Detailed Answer: Hello, Thank you for using HCM. Heart palpitations usually aren t serious or harmful, though, and often go away on their own. Most of the time, they re related to stress and anxiety or to consumption of stimulants such as caffeine etc. But there can be palpitations due to other medical conditions too such as Hyperthyroidism, anemia, low blood pressure, dehydration, abnormal electrolyte levels etc. In rare cases, palpitations can be a sign of a more serious heart condition. In your case, being post partum, the most probable cause of these symptoms, can be anemia eventough you should have had palpitations during the pregnancy too. This can be diagnosed by making a full blood count exam and if anemia is proven, you should treat it and your symptoms will go away. You should test the thyroid hormones level (TSH, fT3, fT4) and the electrolyte (Na, k, Cl,Ca) levels in blood too. To be very careful, having experienced chest pain you should make an ECG and see a cardiologist. Meanwhile you should take plenty of water (2 - 3 liters per day). Try to avoid getting stressed or anxious. Hope this is helpful. Let me know if you need more clarifications. Otherwise please close and rate the answer. Kind Regards, Dr. Juarda