Share 'Ducky won't stop crying :('

Hey all, hoping you have some ideas here. Ducky got his 12-month vaxs 2 weeks ago and at the same time was diagnosed w/functional diarrhea. His weight percentile was 95th at birth, 47th six months ago, and 11th now. Not sure if all that is relevant to what's going on now, but it might be.A few days after his shots, he got a mild fever and cough/congestion and his previously-huge appetite dropped…