Sick baby?

I’m going nuts. My son was diagnosed with an ear infection a week ago and started antibiotics which he’s still on. But today has been an absolute nightmare. He is still grabbing at his ears, but on top of that, he’s been refusing his bottle, sleepy all day, only wants to be held, and cries as soon as he wakes up until he falls asleep again. He had a cold and wet cough last week and they listened to his lungs for signs of RSV but didn’t find anything alarming. He still has the cough but not the runny nose. It’s just concerning me that he’s not eating and is sleeping so much. Anyone have any idea what it is? He’s also spit up a ton today!

My husband has what we thought was food poisoning (threw up a few times over night), but maybe it’s a stomach virus my son now has?