Is it normal that my mother-in-law invited herself to my delivery?

At this point you either have to a) physically constrain her from coming to the delivery or b) yell at her.

At this point it's beyond being rude. She is literally just neglecting your feelings which is extremely rude, a lot more rude than asking for some privacy. This is not her just wanting to be there, she is imposing herself. You've already spoken to her once and probably should again, so yes you should be not just upset but actually angry. Do whatever you need to do to explain to her how rude she is and how YOURE demanding that she not be there. If she goes against your wishes, she obviously does not respect you and that is another problem on its own.

Well I could see why the grandparents would want to be their. Since yes its your child but its their grandchild and she might feel like if she is not their she is not really part of the child's life.

However giving birth is very personal and I have known some women that say they do not want anyone at all in the room. Yes a women pushing something out of her womb might be embarrassing and even more so having several people around that do not necessarily need to be their.

Its your right to give birth in privacy. Explain not allowing her to witness the birth does not mean you are going to cut her out of her sons and the child life. However since you are giving birth you have a right to some privacy during the process.

If not I would say see if you could get a restraining order. At least one for the time being. Since if she crosses it while your giving birth she will be arrested. I would say maybe notify the hospital and tell them you only want your husband, the doctors and yourself in the room during the giving birth process.

do what you want having babies is already stressful and painful enough. I am glad I had mine when no one was allowed in there.the nurses and doctors must have thought I was nuts.

It's normal cause it's her grandbaby. My mother flips her crap when she talks about wanting grand babies. Most moms go crazy as all hell wanting babies. it's odd, and I would hate it too, but it happens!

I'm sorry you're going through this, and would feel the same way in your situation. Unfortunately, her expectations are probably somewhat normal. Most people would want to witness the birth of their first grandchild, but she has gone too far. You are the one giving birth and she needs to respect your wishes. Since she hasn't taken no for an answer so far, I would come up with a plan so this doesn't happen when you give birth. Maybe you could just go into delivery and wait until afterwards to call her? Or, if she does come to the hospital, make sure you let the attending nurses know ahead of time that no one else is allowed into the delivery room except your spouse.

Yuck. I'm sorry you're going through this.

Well... For one, the child you're having, has almost as much of her blood as it does yours. I get why she may get the impression that it's a moment she's entitled to.

"First she takes my son, now she dare deny me my grandchild?" is probably along the lines of what her subconscious is telling her.

It's not that she's trying to be a bother but its moments like these that (almost) all parents live for. And it's not just gonna stop there.
She's gonna be changing the diaper, dropping him/her off at school and be saving a sweet stash for when he/she comes to stay for the weekend.

It is your call but understand she isn't overstepping her rights by that much. I'm guessing it must be really something to be there from the child's first second in the open and be able to reminisce on the child's graduation day...

That being said mothers in law naturally don't get along with their child's mate though and in many instances may just see you as an incubator... Just my point of view. It is your call at the end of the day.