Bently got shots on Friday, had a fever yesterday and today woke up at 6am ate 4oz and didn't take a…

Bently got shots on Friday, had a fever yesterday and today woke up at 6am ate 4oz and didn't take a nap until about 4. Well he just woke up about 10 minutes ago and has been screaming bloody murder since the second he woke up. I have NEVER heard him scream like this and I'm so scared :(

He won't eat anything other than the 4oz this morning and 2oz at about 3.

What are some ways I can try calming him?

I did call his doctor and they're going to get back to me.