Tough relationship with mother

My mom and I have always had an odd relationship. She’s very distant, not a very reassuring or loving person. I’m her only daughter and had brothers. If I ever borrowed a jacket or used a curling iron she would freak out, cry and tell me I don’t respect her things. I’m 21 now and living with my boyfriend. She wasn’t too supportive of that decision, when my brother moved out she payed a couple hundred dollars of his rent every month. When I told her I planned to move out, she said “well okay good luck, it’ll be financially hard”. She praises my older brother for being good at school and she babies my little brother because he’s the youngest. I’m right in the middle and it really doesn’t seem like she cares for me much. She never says I love you, if she does it’s because I say it first. When I told her I was pregnant she only focuses on the financial, insurance, and real life “babies are hard” stuff. It sucks because when a woman gives birth it would be nice to have her mom there for support. But I could 100% picture the conversation going like this:

Me: oh my god I’m in so much pain labor sucks

Her: yup that’s how it is.

Like I just cannot picture her being supportive and understanding, she’s very blunt. But I don’t know how to go about not having her in the room or if I should even choose to not have her there.