HR monitor question

ridgellmomof3

I have a Polaris HRM, it so far has been good to me when it comes to being accurate in comparsion to MFP, they are about 50 calories apart on my exercises. So I was curious what my calorie burn is in a day, now my job is super fast paced, and I am bending lifting, running all day ( I am a veterinary surgery nurse) anyway, I turned on my hrm monitor yesterday and I let it tally while I was working. Yesterday I put in 14 hours, and in that timeframe my HRM said I burned 3242 calories?1?! my average heartrate was 105. This seems a bit much to me, I mean I really dont stop and my just does keep my heartrate up, but really? Anyone have any thoughts. I have my HRM programmed with my average HR and my age and all that jazz....