My 5 month old has completely changed this past week. She won't sleep all night anymore, she won't…

My 5 month old has completely changed this past week. She won't sleep all night anymore, she won't nap, she fights me when I try to feed her, she is super fussy for no reason. she's stressing me out so bad. she won't just chill and play with her toys or watch her movie anymore. she just keeps whining and getting mad for no reason. 😩 I'm so stressed and drained.