PLEASE PLEASE PLEASE do not have an abortion. I know this one is gonna stir up a lot of emotion and responses. I am going to try to not force my opinion on you about abortion. Instead, I just want you to know how many people there are out there in the world who desperately wish they could have this problem! I currently know of 2! My neighbor almost died while pregnant with her 2nd child, and ended up losing that baby...his name was Connor. Now she desperately wants the chance to have another, but can't. It tears her up...
My brother and sister-in-law have been married for 14 years and tried to have their own children any way they possibly could...and were never successful. They were able to adopt a baby girl 10 years ago...and most recently adopted 2 and 3 yr old brothers. We love all these kids just as much as the rest of the children in the family that are biological. The 10-yr old girl was almost aborted by her birth mother...everytime I think about that, it kills me. I just want to burst out crying thinking that she might not be here. PLEASE, if you don't think you can handle it, give another family a chance. You would think with all the kids out there that it is easy to adopt, but it is NOT! The chances of getting a baby are VERY slim.
There are obviously other issues you are dealing with, and I am sorry you are having a hard time. I recently had my 3rd, and I will tell you, it was hard at first. But he is 8-months old now, and I can't remember what it was like without him. You definitely need someone to help you. Talk with you husband. Tell him you need his help. Not in a nagging, yelling way, which I know is hard to not do. I would think if he loves you and the 2 children you have, that he would be willing to do whatever it takes to support the family. My husband surprisingly stepped it up with this 3rd one.
A husband probably won't ever ask you what you are feeling, or going through. As much as it sucks, that just isn't the way they are wired. I am coming to realize that too. That's what Mothers, sisters and girlfriends are there for. Have them and use them! They understand and will give you the emotional support that men won't.
I would not have the MIL come stay with you if she is just going to cause problems. Maybe for the day...try to be civil, but then send her home. This is YOU AND YOUR hubby's family...not hers anymore. (but try to keep the peace...she is your MIL, means well, and loves all of you). If you can afford a nanny, I say go for it! If you need the help, then let someone help. Don't be afraid to ask for help if you need it!
I really hope you take your babies life into consideration. I know it would be hard to give him/her up for adoption, but wouldn't it be just as hard to end his/her life just because you think it will be tough for a few years? No matter what you choose, it will be hard. Life is hard...but you WILL and CAN make it through this! I know you can because you have already been a mother twice and there is NO ONE tougher than a mom! God bless, good luck and hang in there...