No its not a bad thing... sometimes babies don't poop everyday.. I have 3 kids and had that problem with my youngest where he didnt poop for two days and his dr told as long as he passes a stool within four days to not really worry about it. Try rubbing his belly :-) good luck
My daughter is formula fed and has a bowel movement every other day.
They don't have to poop every day. As long as it doesn't go past 3 days, they're fine.
You can massage their tummy or move their legs in a bicycle motion and that should get things going.
I would call the pediatrician cause baby should've pooped already.