Am I in the wrong?

Im 22 years old, I still live with my parents. I pay my stuff(college, car, food, etc) I have a job. I’m about to finish my bachelors degree in nursing, I’ve pulled money out of my ass to make my studies happen with the most minimal help from my family.

I am engaged (which they’re not happy about) and I just found out I am pregnant last week. I haven’t told anyone, because my fiancé is in basic for the navy, he’s the only one who knows since he called this weekend, he’s very excited seeing as we’re to have a civil marriage in may and then a more formal wedding in august with family and friends.

My mom just got diagnosed with breast cancer, but they caught it on time, they’re just going to remove the tumor and put her on some meds and implants. The doctors say she will be just fine.

She’s having this constant fight with me about how I’m to focused on myself and on my “stupid” boyfriend and not focusing on her breast cancer, and that I’m a terrible daughter. She says that she needs to be my main focus since she did it for 22 years.

Aside from that she keeps on saying that if I get married now, I’m doing everything backwards and not to count on her or anyone in my family to be around. That my wedding isn’t important, nor is my relationship nor am I. She is. Which I understand, but not to the extent that everything has to revolve around her.

Being pregnant I know I won’t be living here but that is just fine because I’m literally getting married next month. She’s making it seem like I can count them out of my life if I do so. Please note she’s been like this and even aggressive with me since before she was diagnosed. I bought her a roomba to make things a little more easier for her cleaning wise since I know she won’t have a lot of mobility, and instead of a thank you all I got was “this is nothing compared to everything I’ve given you the past 22 years. It’s the least you could do.”

I don’t want to be here at all, and I’m waiting on my fiancée to announce the baby. I don’t know really what could happen if I were to announce it on my own.

I’m never here, all I do is work and go to school. And when I am here all I can hear is complaining and negative energy. I feel like she’s trying to gaslight me into doing my life the way she wants me to, not the way I have planned. She also expects me to ask for permission to get married not just tell her I’m planning on getting married and I am getting married because “she didn’t raise me this way” all she says is how I don’t care, I’m ungrateful and a terrible daughter and that life is going to hit me really hard.

Am I doing things wrong? I’m conflicted but I’m really unhappy and I just don’t think my happiness should revolve around what other people want regardless if they’re family or not.