Hello, and I hope I can help you today. If you have been taking the same birth control pills for two years, and your palpitations have only been an issue in the last six months, it is unlikely that all of a sudden the side effects would be produced by your birth control pills. Many doctors who are not familiar with prescribing contraceptives blame them from numerous types of physical symptoms that have absolutely nothing to do with a woman s reproductive life. Allergic reactions to medications usually manifest themselves by rashes, fever, or other types of symptoms typically associated with allergies, like runny nose, sneezing, and itchy eyes. So again, heart palpitations are not a symptom of an allergy to drug of any kind. Furthermore, if all of your cardiac evaluation has been negative, this means that even though you feel like your heart is beating fast, your heart rhythm is completely normal. Women can experience palpitations from stress, anxiety disorders, drinking too much caffeine, lack of sleep, and other benign causes. So in summary, I believe that it is doubtful that your current symptoms are being caused by your birth control pills. If you have had a thorough evaluation of your heart and heart rhythm, and all of that is normal, it is most likely that your palpitations are being caused by emotional issues or things related to your diet and lifestyle. Getting adequate rest, eating a balanced diet, and regular moderate exercise is the best way to ensure your overall health. I recommend that you go back to your primary care physician to talk about any life events or emotional issues that may be contributing to this problem. I hope I was able to adequately answer your question today, and that my advice was helpful. Warm regards, Dr. Brown