There is absolutely nothing wrong with you - this is an unfortunate result of the betrayal.
I'm 35 and always wanted 2 kids. I have gorgeous, amazing DD4 and 3.5 years after DDay I still haven't figured out whether it's a good idea to have another or not. I've worked a lot on finding peace with the fact that I may have only one child. Just in case that's the eventuality.
I repeat - there is nothing wrong with you. This is hard and confusing. It's ok to take some time, even if it's a couple months. Life doesn't always (ever) go the way we plan, and accepting that helps us navigate the twists and turns.