Are you able to tell the difference between BH and baby moving?

Cheyenne

My doctor told me today that if I'm having BH often then I should start timing them. The only thing is I realized today that sometimes I'm not positive if it's a BH or if the baby is just pushing up against my tummy, because it only lasts a few seconds, but at the same time it still makes me lose my breath. Does anyone know a way to tell the difference?