MOL driving me crazy

LONG READ SORRY JUST A LOT ON MY MIND

I am 20 and my SO is 23. I am in College and my SO recently graduated.

Just to make a long back story short I had my first child in April of 2018 and it was me and my SO first and his mom was super happy! Like overbearingly happy. She made me feel so uncomfortable with the comments she was making while I was pregnant that I didn’t even want her at the hospital AT ALL. Some ex. are her saying that she was gonna steal the birth certificate to put the name she liked cause she didn’t like our choice of name, saying she was gonna break into the hospital during quiet hours (no visitors) to see her grandson, making fun of our name choice, etc etc. I even had a dream of her showing up to the hospital and kidnapping my son before I even got to meet him (crazy ik)

I’ve always felt uncomfortable with all the comments she makes and I really hate going to her house because she makes me uncomfortable and she irritates me by always making comments about her being entitled to things (like my sons first christmas) and making it seem like she’s better than everyone else. I bring it up to my SO but he always takes her side and says she’s joking and I’m being dramatic and I need to get over it. Well every time I choose to not go over and we don’t his mom says things to make him feel bad and he tells me I’m driving a wedge in their relationship and I get blamed for so much.

I always have to make sacrifices in order for her to be happy. We go over to her house (she lives 2 hrs away) almost every other weekend and we go to my parents house (they live 4 hrs away) maybe once a month or every other month. Every time we do go to my parents house we always have to stop by and see her Nd i get mad at my SO.

My SO is also super sneaky about stuff when it comes to her knowing that I don’t like going there. For example, we are going there this weekend (fri night after SO gets off work till Sat because I have class Sun) but she has to work most of the day Sat and my SO failed to inform me because he knew I wouldn’t want to go if I knew. Which he’s right, I don’t. There’s no need to drive 2hrs when she’s gonna be gone. We can go another weekend. I’m always having to read through his text with his mom just to know what is going on.

I just need some advice on how to deal with the situation and my SO. If you get to this point, thanks for taking the time to read my story! There so much more I can vent about but I don’t think I have enough space to haha