My 8 month old is generally the most easy-going, happiest baby. Generally he STTN, although he's been sick and teething, so up a couple times. Yesterday, he was finally back to his happy self all day long. Good naps, happy demeanor, no problems. Then last night he woke screaming at 11 PM. Nothing I did could calm him down, but I eventually got him to nurse to sleep in bed with me. He was up most of the night, even in bed with me. Sometimes happy, but mostly mad if he wasn't finally dozing. This morning he has been entirely inconsolable. I checked fingers, toes, diaper area, he looks entirely fine and doesn't have a fever. I finally got him to calm down by showing him videos on YouTube, which I have never done before. But even now he isn't entirely happy. I will call the doctor if it remains the same through the morning (it is only 6 AM here), but I'd love if you guys have any suggestions or things to check. I'm at a total loss because this is so out of character for him.