Baby is 12 days old have started feeding her using bottle and she is passing stools after every feed

A. Hai good evening !! New born babies pass urine,stool frequently 7-8 times a day ,immediately after feed this happens due to digestive system as their digestive system still developing passing urine,stool frequently is normal. Only concern if passing more than 7-8 times a day loose watery motions with foul smell ,frothy,any blood stains then consult Doctor on this.