welbeck
This is domestic abuse and elder abuse.
I think you should contact the police.
Sounds like son is trying to cuckoo you out of your own home.
You need help.
Real help.
Yes.
If you were in the UK I'd advise a phone call to Age UK, so if you are in the Sates Gurms you need a similar helpline.
I maybe wrong, but amI right thinking you are partly afraid of being alone as in fearing you will lose access to your grandson and future baby as he is controlling to his wife? that is very understandable but do not assume that will happen as they are likely to want child help.
In my opinion, having divorced a Coercively Abusive man at age 71, and knowing quite a bit about MH too, he is not only controlling but has pretty much got some MH stuff too.
You re going to need a lot of support. I did. Basically shouting out loud enough, a lovely lovely solicitor. practically sat with that phone call to the older persons agency, some quiet advice from a solicitor, and going to the doctor to let him or her know just how bad it is.