My 3 month old baby farts a lot and his farts smell very bad. The smell has been coming only a few days ago. He also refuses to breast feed and spits up all the milk if he breastfeeds. He has also not been passing stools for the last eight days when before he used to poop every day. His present weight is 5 kg. He had been fed honey 1 tsp on 3 occasions and 1tsp pomegranate juice and 1tsp orange juice. Should I be worried?