Starting to get worried

Clarissa • Mommy to the most beautiful baby boy 💙
Ever since Oliver's shots he's been extremely irritable and I'm starting to get worried. I don't think it has anything to do with his shots but that's just around the time it started. He wakes up around 5-6 and refuses to go back to sleep and gets so overtired he cries for hours. He'll start randomly screaming and when I try to feed him he refuses unless I force him to. His poop was a little strange for a while but now it seems to be a bit more normal. He's also been eating less than usual. He doesn't eat as often or as long. I keep telling my mom about his symptoms and she swears he's teething but he doesn't stop crying long enough for me to even check his gums for swelling. I'm all out of ideas as to what could be wrong. Should I just make an appointment to see his pediatrician?