Due Feb, stress of MIL

[Mv2145]

Im due in February with my first and my MIL is stressing me out she has done from day 1 really and I’ve tried to just brush it under the carpet for example not letting us pick the pram we like/buying things before asking (meaning as in there’s been other people in my family that would of like to of bought things and she’s just going out and doing it) so they feel quite left out. The thing that’s upsetting me the most is that I feel like she’s trying to take my firsts away with baby she told my partner she’s going buy the babys first Christmas outfit and he stupidly said ok (I wasn’t there) and he has apologised to me for that but really she should of asked us both and the answer would of been no. Then I find out she’s doing our babies first Christmas Eve box too.. I don’t know whether I’m overreacting but this has really really upset me and I’ve explained this to my partner and he’s not willing to speak to her. Should I maybe have a word and explain or am i being dramatic? Obviously it’s been a build up of everything she’s been doing.. I get she’s excited but I really just need her to take a step back and let us do our own thing as a family. I’m so excited to become a mummy I don’t want precious things like that being taken away from us I haven’t even met my little bundle of joy yet I shouldn’t be stressing about this kinda stuff already! Thank you 🙂

Update: Thank you ladies for all the replies, it really helps to get advice from fellow mums-to-be even if it isnt what i expect to hear that can sometimes be a good thing too!
Since then I havent said anything to her ive just let her do her thing and i have warned my OH that he shouldnt always be putting her feelings before mine because i will end up isolating her AND him and i have tried to demonstrate how this might upset me as the mother also.
Turns out I didnt really need to emphasise this too much as I have been doing some baby shopping (naturally) and i mentioned to my MIL in passing that I would purchase a baby bag soon.. so she definitely knew i was going to buy one. Lo and behold a week later she messaged me saying she brought me a baby bag.. at this point i told my OH that i had told her i was getting this for myself and he insisted she must have "forgotten". I had since then already purchased a baby bag and i told my MIL this and she was taken aback saying she knew i was going to buy one but didnt realise i already purchased because i never mentioned it(??).
My OH obviously thought she forgot and when i told him she admitted she knew and went ahead and bought one anyway i think he finally got the message. I explained to him that she expects me to announce every single baby related item i purchase instead otherwise shes going to go ahead and buy things even when she KNOWS im doing it! He did seem to really understand and agreed to speak to her but i asked him not to because i replied to her saying it would have to be a spare. She seemed upset but i dont care, she didnt have to buy me one when i already told her im getting one. She admitted she got it for me because i hadnt mentioned it at which i responded to her saying im doing a lot baby shopping and i have bought a lot of things which i havent mentioned because there are too many to mention and of course im going to be buying things as the mum! I didnt realise i had to list everything to her or update her everytime i buy a onesie or socks for the baby..
She seemed to get the message and i repeatedly had to remind her i did say i was going to buy one as if i did something wrong by not mentioning i bought something i already said i was going to buy (?) Which i found really odd. Glad my OH finally saw where i was coming from its only a matter of time.
As for the the comment above that its just buying things and we should get over it, theres a certain degree of control this portrays and wastefulness too, its about respecting each others wishes and communicating, ive communicated myself and ive been deliberately ignored which i find disrespectful and insulting and so i had to make this apparent to my MIL who literally feels like she can do what she feels like and my OH is supposedly going to come to her defense.