New born vomit - is that normal

So i have 3 kids now.. yesterday my son was born and im alittle concerned about some vomit he has had tonight. Hes breast fed. His birth fluid was completely clear my milk is clear/milky and hes vomited up black oderless mucus/slime. Hes also been gassy and has done 4 poos since birth. My other 2 children are much older now and i dont recall this happening with them. Anyine else experienced the vommiting is it just fluids from being in utero coming out? As he didnt cry at birth or since. But has good colour breathing fine and is hydrated. I will call peeds when they open in the morning but just thought id ask.