someone please shed some light on this, my son is 18, he currently is on iv for mycrobacterium abscessess, he is better but in the past few days if he has eaten and starts to cough, he will throw up, but only if he has eaten in the last hr, is this normal, most of the time when he starts to cough, he will gag and mucus comes out lots of it, this is new to us he never has been this sick before the bad bug, and i was just wondering if anyone has this bad bug or has had these same experiences when they were iv med. thanks for helping us, we go to the doctor tomorrow and i just wanted to be a little prepared as to what might be going on.