Idk what to do..

Ill start with a Bit of back story,

So basically one of my fiances friends is living with his mum but she is moving and he can't go with her and so my fiancè, out of the kindness of his heart, offered for him to come live with us but it didnt go any further than that as far as i knew. And i explained to my fiancè that i wasnt comfortable with his friend comimg to live with us as im about to have our first baby and dont need extra people in the house. Now this friend is dating this chick and i honestly cant stand her. And she is ALWAYS with her boyfriend but unlike her im not glued to my fiancès side so i could go see him and shes there with them all the time.

Now i went out for the weekend to my parents place for my baby shower (im currently 30 weeks pregnant with our first baby) when i got back from my weekend away my fiancè says to me that his friend AND his girlfriend are gonna move into the spare room! No one asked me how i felt about it. That room is meant to be for our baby girl when shes old enough to have her own room!

I dont get along with the girlfriend. Cant stand her. And shes been going on and on about how she wants to be all over our baby when shes born! Wtf no. I dont want her all over us when ive just had a baby and im trying to bond with her and learn how to care for her and all that.

So obviously i told my husband i cant stand the girlfriend and about the spare room and all that but now im the horrible person cause his friend needs somewhere to live which i understand but no way in hell do i want that girlfriend to live here but apparnelty while i was gone they asked my mother in law (she is our landlord) and she said yes so now i dont have a say! I feel so alone. I know when they move in i wont get any attention from my fiancè cause they will be working on the cars all the time and we will have no alone time or privacy and dealing with that woman after ive just had a baby is the last thing i need.

Am i being stupid or am i right to feel this way?

I honestly feel so alone and useless 😞