Has anyone else experienced this? Baby was a little fussy the day of his two month shots, but was completely back to normal the day after. Now, after the four month shots, he was fine the day of, which was yesterday, but has been sleeping almost the entire day today. He hardly wakes up when I feed him. And, he has screamed in the middle of his naps like he's hurting or had a bad dream several times today. He's not awake and still has his eyes closed. I pick him up and talk to him softly and he goes back to sleep. Anyone else notice this on the day after vaccinations?