What medication did you get? Doxycycline can be used to treat MG and other respiratory infections. It is in the tetracycline family. Oxytetracycline can be used as well.
Since MG can be a chronic disease, possibly coming back later, it might be good to get some of the Tylan (tylosin) powder...
Sometimes, my TSC has Tylan 200 in stock, but it costs at least twice as much (but is 4 times stronger.) The link that @Wyorp Rock posted says it is in stock today, but they may be closed until tomorrow AM. It takes a couple days in shipping.
Well Tylan 50 dosage is 0.25 (1/4 ml) per pound, so I would give him 2.5 ml (2 1/2 ml) given orally 3 times a day for 5 days. Just give him a little at a time, no more than 1/2 ml, and then let him swallow.) Does he have bubbles or foam in his eye? Tylan is good to treat mycoplasma (MG) in...
He sounds like he has a respiratory disease with the cough or sneeze, congestion, and it looks like his right eyelid is swollen with eye drainage. Any bacteria, virus, or fungal respiratory disease can cause yellow or whitish plaques inside the trachea. But I think that it could be a foreign...