Baby Screaming 6mos old, Why??

Halllpppp me! For the past three days my daughter has been screaming any chance she gets. Not crying, not moaning, straight up screaming. I can’t figure out why. She’s also started napping in super short intervals (20-30 minutes, with wake windows 2+hours), but still sleeps through the night no problem. I thought she was just finding her voice, but it is SO loud and everyone I send a video to says their kids were never too loud. She’s not displaying any of her normal teething signs, so what gives?