I am wondering how low a heart rate can be before it gets dangerous. I was shopping and celebrating a friend's birthday and while we were eating lunch, I got all tingly and felt like I might pass out. (No, I do not drink alcohol) I checked my heart rate monitor and my heart rate was 44. I know that is very low, but how low is too low? I hate that these things always seem to happen on the weekend too. If I go to the ER, I will be in the hospital until Tuesday. My doctor told me that I have a mandatory 24 hour stay at the hospital if I come in with anything related to my heart and since it is the weekend, they would not do any tests until Monday at the earliest. I would rather he be that way than not care. I don't know what to do. My rate is up to 54 for now. I am a little afraid to go to sleep though. Does anyone know how low is too low?