...or scare me into calling the ped in the morning. DS developed a cough last night. He coughed up some clear stuff when DH was holding him. I stayed with him all night. He woke up every hour to hour and a half gulping and coughing. I brought him up and walked around with him. He would get to the point of almost spitting something out, then swallowing it again. After a few minutes, he would fall asleep again.
This morning DS had his two-month check-up and vaccinations. The ped listened to his lungs as part of his normal check and said they sounded fine. He said we shouldn't be worried about the cough, and any number of things could be irritating or stuck in his throat.

Basically, any and every symptom could be explained away as nothing to worry about:
Coughing - acid reflux (diagnosed at 1 month), he recently started drooling a little, gripe water and vaccine given by syringe, coughing/choking on breastmilk from breast and/or bottle
Fever - don't think he has one, but if he does it could be from the vaccinations
Fussiness - from the vaccinations or gas/reflux
DH thinks he's "getting sick." It's possible DS and I got a cold over the weekend. I've got a little bit of a sore throat and headache. BFing will help him fight it if that's the problem.
He's not coughing constantly, his breathing isn't labored (just noisy during his coughing spells), and he didn't cough during the day. I've read that coughs often get worse at night.

In summation: clear lungs, inconsistent cough. I'll keep an eye on it in case it gets worse, but I'm keeping calm for now... right?