Guys am I wrong for this?

So basically I never wanted a baby shower because I don't have many friends to begin with and I just felt it would be a waste of money to go out of my way to have one. So my sister asked me if we could have a small dinner and bring the baby stuff and I said sure whatever even though I didn't want one in the first place. So my sister tells my parents and everyone else, which led to my dad inviting his kids that are nosy and that I don't even like. He asked me if they could come and he gave me their numbers to invite them, I don't feel I personally invited them... I just told them they could come if they wanted to, but my dad was already telling them about it and I felt bad and pressured into telling them to come. So anyways, this is a bad week for me because I have bills and other things to focus on like finishing up buying the rest of the baby stuff, I also didn't buy an outfit or really plan for this. I didn't want the damn dinner in the first place and now all these people are being told they can come even though I don't like them and I've decided to cancel it. My sister is mad because she feels I should have it anyways, but I lied and said I had furniture coming (tomorrow, not the day of the dinner) to get out of it. I didn't want it anyways and my sister stays trying to pressure me into thinrgs I don't want. It would turn into a gossip festival because my husband's family won't be there due to not living in the same state (husband didn't invite them anyways), and they'd judge me and talk so much shit like they usually do. I just want to enjoy my last few weeks of pregnancy in peace. 🙄