My 8.5 month old has been getting super angry super fast lately and I’m a FTM so I have no idea if this is normal! She well grunt, scream and arch her back. For example we were eating and she finished her avocado toast and then screeched and arched her back. I guess I’m just nervous that we’ve gone from a smiley happy baby to an angry child. Is this just a normal phase? She also does this when ever we lay her down to change her diaper. She had a doctors appointment recently and her ears are fine so it’s not an ear infection.