Baby butt tmi

Ashlynn
My son is 8 days old, he hasn't pooped in three days. He eats normal so it worries me that he was eating so much and not pooping. I called the doctor and they said give him a suppository. After very few minutes, he pooped. I was getting him ready for bed and found this in his diaper. Is it from the suppository? Should I call the doctor again?