Mother in law coming for 3 weeks driving me crazy

I need advice. I don’t know what to think anymore.

My boyfriend and I live in Canada. He is French and his whole family lives in France.

I’m supposed to give birth sometime around mid-November.

It was always clear between us that his mother would come visit the baby but now we just don’t agree on when is the right time and how long she can stay.

At first we talked about having her over for Christmas and my boyfriend wanted her to stay for a month. I told him I felt it was too early to have someone with us 24/7 for a month when our baby will be just a month and a half.

I told him it’s our first baby, it’s the most important time of our lives and I want it to be just the three of us. I want to take the time and space necessary to get to know our baby and to build our family.

Also, I don’t know how I’m gonna feel after giving birth. I’m gonna be sleep deprived, breastfeeding day and night, hormonal, etc. The though of having someone in my appartement 24/7 for a month is a huge stress.

I also have to say I don’t really know her. I’ve seen her twice only and although she is a very nice lady, I have a hard time communicating with her. She’s deaf and she doesn’t understand my accent so I’m just unable to have a conversation with her.

So, after telling him all this he said I was right and that it’d be better if she came in January. We agreed.

Then, several weeks later he changed his mind and told be he wanted her to come for Christmas after all. We had a huge fight about it. He told me: I haven’t been with my mother for Christmas in 8 years. Can’t you understand that?

Feeling guilty, I flinched and said ok she can come but for two weeks ( which I think is a fair compromise). We agreed.

Then, weeks later, he started looking at the ticket prices (he is paying for the ticket) and told me it was way cheaper (1200$ instead of 1500$) if she stayed three weeks. We don’t have that much money so I said it’s ok although I’m really not happy about it and I think three weeks is too much. We agreed, because of the price.

But then, he found even cheaper tickets for a two weeks stay (1000$ for December 17th to December 31st). He asked her if those dates worked for her and she said yes but it’s not very long and she « seemed very disappointed » as my boyfriend told me afterward. So he told his mother, without consulting me, that he’d buy the tickets for three weeks, even if it’s more expensive so she can stay longer.

And now he doesn’t understand why I’m mad. He says: I’m trying to please everyone and it’s getting very complicated.

But all I see is me, compromising, and him asking for more and more. I feel like he doesn’t respect my need of privacy when welcoming our newborn. Why can’t he just tell his mother it’s two weeks this time because of the circumstances but next time she’s welcomed to stay longer. And why is it ok to disappoint me, the person he’s sharing his life with, but it’s not ok to disappoint his mother?

We had agreed on this. He told me I was right. I feel betrayed.

And now I’m doubting myself. Am I mean for not wanting his mother over for more than two weeks when I just gave birth?

Please tell me what you think. I’m very sad and the thought of having her over for that much time is almost unbearable to me. I don’t know what to do.