Help !!

H

Hello mommies! My daughter is 4 months old today and has been exclusively breastfed. Since a few days now she does not want to eat much, she eats 3-4 feedings per day when she used to eat 6-7. I have done blood tests everything is normal - I don’t understand what’s going on. (Some other signs : she pulls on her left ear, gets fussy and screams very high pitched sounds, her fingers in her mouth all the time). Please help, what is going on ? Thanks