Please ask your doctor to check your thyroid with a blood test. I wouldn't agree that it's always "normal" to have an irregular heartbeat every day or that you should ignore it. Not only can regular palpitations or atrial fibrillation increase your risk of stroke, but it might be caused by a thyroid imbalance which CAN have an effect on your baby if it's not treated properly. Do you have any other unusual symptoms? Do you feel hot or sweaty? Do your hands tremble? Anything else unusual?