If your child is getting loose motions thrice a day, you should really consult your family doctor. It could mean that your baby is unable to digest the milk! Plus, loose motions would also mean no nutrition is staying in his body. Go to pediatrician who can suggest. Maybe ORS or something..
Are you sure it is loose motions? Because apparently, in the first few weeks, the baby passes stools after every feed. Average will be about 4 per day. This will settle down and her bowels will work out their own routine. Some breastfed babies may pass motions once every few days or even once a week. This is not a problem as long as your baby passes easily.