When should I worry?

Amanda

My baby is 3 days old now. He hasn't had a bowel movement since Monday morning. My milk hasn't come in yet and yesterday he was acting dehydrated and the doctor recommended adding 1 oz of formula after each breast feeding which I did.

I hear him able to pass gas but just no stool. When should I start to worry?

He's been very calm today. Seems content with just nursing on the breast and sleeping. No fever.