Am I being petty?

Plz be honest

My bf hasn’t really been helping he thinks because I don’t work I have to do everything he also thinks taking care of our daughter is easy (not saying it’s really hard) but some days she’s really cranky and now that she’s teething she’s fussy I also multi. Task he can’t so I’ll be making a bottle while she’s in my arms trying to calm her down and that’s nothing ?? And then I top of it my bf and I fought Saturday and Sunday then had to go to something for his aunt it was her birthday he made me miserable
But that’s not all I find out his sister telling him about my actions and how I was acting lol she said I was mean to her son but she was biting her tongue 🤯 what?!? I was not mean to him and thn she says u need to tell her u pay everything and blah blah blah yes he recently put me on the car insurance he doesn’t pay my medical bills he didn’t pay for the bill after our daughter was born he didn’t pay her first drs appointment which was 500 something $ like seriously. The. She’s like she’s so immature well I posted something on my ig about immaturity and well got her panties in a bunch 🤣