Mommies? can you help? The baby is on breast milk plus supplementary …

Mommies? can you help? The baby is on breast milk plus supplementary feeding and I give him/her up to 4 tablespoons in a day but only on the tip of the spoon. Today is the fourth day since he/she hasn't pooped, is this normal or should I panic? I am doing massage but it doesn't help. It just comes out like poop ?? Sorry What should I do aaa My husband has problems with constipation in his family (we are married to brothers), his sister's children had troubles and I am so afraid of this ??? How to avoid