I would say if possible have a very frank conversation with Husband about the direction your relationship has taken. Explain that you need some time for yourself and that being high risk you do not believe that this is the best environment for you to deliver into especially into especially with possible complications.

I would then have a very similar conversation with MIL (if you say you and her had a cordial relationship especially with middle eastern parents she would feel like she’s owed an explanation). Do not bring up your marital problems but whatever issues you have in respect to her. You can simply say in reference to her interference that you do not appreciate her getting in between you and husbands disagreements as a married couple those are for you to sort on your own.

Then I’d stay with your parents give husband the time to think on what you said. Limit communication not in a way of a petulant child (I don’t want to talk to you) but I think we need time to calm our emotions and have a rational conversation. Screen all text messages answer those you think are productive ignore those that aren’t. Same w/ phone calls if it’s productive have one if not then hang up.

Hope you and LO have a safe delivery. I understand how complicated middle eastern families can be (I have a similar background ish) and it’s difficult to navigate.