Just need to rant 🤬

My partner and I have a 1 year old little boy and I’m currently 31 weeks pregnant my partners mother has been pushing and pushing to have our one year old for a week when I give birth to our second child she doesn’t want to look after him at our house it has to be at hers ( she lives 8 hours away) I have told her I’m not comfortable with that and I don’t want our son to feel left out and I want him with us after I give birth, anyway when we said no to her having him then she got shitty and wouldn’t speak to my partner and made him feel so bad over it, so we compromised and we agreed that she would have him for a week at hers before the baby we planned the date and she even went and brought a car seat for him to use just for the week his down even though we have one that she could put in her car.... we had to meet her half way though and when I said we will drop him off and stay for the weekend with him so my partner can spend time with his mum as well he got really defensive about it saying how we don’t trust her and so on ( we trust her but I have bad anxiety and would rather be there if he needs us those first nights) , well now her boyfriends child that he hasn’t seen in 5 years (wasn’t allowed to cause of violence orders) is coming to stay that same week as our son was staying my partners mum has never met this person but has told us we can no longer stay there cause the grown child (20) is staying there instead so I said well we could come 2 days earlier so that we are still there if our son needs us and so we could also meet her boyfriends child so we know who is going to be around our son, well shit has hit the roof yet again and she has taken everything the wrong way so we are the bad people for not trusting her and being over protective, I have always felt our son is to young to be going that far away with out us but my partner wants our son to spend time with his mum witch I understand as I want him to have that time as well but not alone so far away I have been so stressed out about all of this and when I was speaking to my mum about it the other day she brought to my attention that to mix stress can be baby for the baby ( I knew it was bad but didn’t realise how bad it can be)

So I would like some opinions on what others think his he to young and she is expecting to mum to soon or am I being to over protective