Conversation: The conversation between human and AI assistant.
[|Human|] Female Age 27, 52, 155ibs. Hello, not very often (maybe once or twice a month over the last 6 months or so) I notice my heart fluttering very quickly, it feels quite strange, like it is rapped in a knot or something- but does not hurt. Should I be concerned? (also recently had an influx of weight gain and found out I was low in b12...around the same time this started)
[|AI|]  How much is your he and were there any precipitating conditions for this. This is called as palpitations and most commonly caused due to anxiety stress, low hemoglobin and also exercise related. Try to check pulse rate during the episode. most of the time there no need to be worried about. In your case mostly look like benign. But if occurring too fast or associated with giddiness or other symptoms or too frequent then need to see cardiologist for some tests.