12 month old has had cough/cold for 2 days, no fever. Started vomiting 36 hours ago, no interest in food whatsoever last 16 hours but will breastfeed, altho vomits again within 2-3mins of feeding. Also two bouts diarrhoea in last 12 hours. Last couple hours empty dry retching every 30mins or so, and now just brought up pool bright green bile. Is the bile something to panic about or common in GI upsets? Not experienced it with other DC