Ok, my 3 week old nubian buckling keeps coughing thru and especially after being bottle fed. He is doing this while attacking the bottle like the milk is not coming out fast enough, but believe me it is! Then when the bottle is sucked dry he continues to cough for a few minutes. Then he goes off playing jumpin around happy as all get up. He does this with every single bottle, since I got him at 1 week old. I have tried, warm bottles and cold bottles, still coughs. Any ideas, is there something I should be worried about? :?