About to lose my mind...

Last night my boyfriend and I put our daughter to bed around 9-9:30pm. She woke up at 12am so we fed her and put her back to bed.. she gets back up at 4am we fed her put her back to sleep, then she wakes up at 6am screaming her head off, we feed her she falls back asleep until 8am and she doesn’t eat but falls back asleep after I cuddled her. She’s been super fussy and barely sleeps. She has never been like this before even when she was born. I don’t know if she doesn’t feel good or cutting teeth, she’ll be 4 months Friday. I’m getting so frustrated with myself because no matter what we do she just doesn’t sleep and if she does it’s for 30 min or an hour. I don’t know what to do and just need advice because I feel like such a failure.