Hi Becs_Bub
A normal heart rate is between 110 and 160. Unless you have an underlying problem then there is nothing wrong with a heart rate of 123. Just like us when we are active the heart rate increases and when we rest the heart rate slows. The same goes for your baby, when he is very active then the rate will be closer to 160 and when he is resting the rate will be closer to 110 Do not let your OB convince you to have a CS based only on a quick listen to the heart beat