My 8 week old is only breast-fed (including bottle-fed with my expressed milk). The baby is low on his weight gain (getting home scale today to keep a better weight log). The baby was 7lb 12 oz at birth ... and gained only a bit in his first 6 weeks and no gain (and no loss) over the last 2-3 weeks. He was jaundice when we left the hospital. One of my concerns is his brown poop (looks like mud) instead of the nice mustard, spinach, green, yellow, seedy poop, like is normal. Please help! Oh - also - our second concern is over his very “smelly" passing gas. None of this ever happened with our other 6 children when they were babies (and all were solely breast-fed). Thank you.