sorry cofeefan but you really need to ask a rov how low is LOW and when you are allowed to break your fast and how much you can eat. i called rabbi weissmandel ( rabbi meisels knows his number) and found that he was the best and really really knows the halachas and is a mumche in diabetes!!!!! you are allowed to carry your pump to shul cause its a part of you this is the psak from rav chaim kaniefski he is my cousin!!!
