According to what you have posted on here, your mother has borderline personality disorder. Pretty much everyone with borderline personality disorder has a fucked up life. Do you really think that as a tiny baby you had the power to somehow fuck up her life more than whatever trauma/chaos caused her personality disorder in the first place?
Is it possible that your history of depression is causing you to blame yourself for something that really isn’t your fault at all?
I am sure that your childhood was very difficult living with a person who had borderline personality disorder, but children of abuse should never blame themselves for the abuse.
This is quite literally blaming the victim - even if you are doing it to yourself instead of other victims.
It does sound like you are grieving a great deal right now, and I can understand why you resent people trying to tell you that there is a God who is in control of all the shitty things that happen in this world.
My own view is that religion has nothing to do with the abortion debate and it is unfortunate that so much of the focus is on the religious aspect. For someone like me, that seems as ridiculous as it would if EVERY time someone mentioned the death penalty, it was treated as if the only people who are against the death penalty are Catholics.
One of the reasons I am pro-life because I have met women who have had abortions and grieved/regretted that decision just as some women such as yourself have grieved over miscarriages.
Another reason that I am pro-life because I feel that the same things that make my own child valuable enough that I would never want to have an abortion also apply to other children who don’t happen to be related to me or happen to implant in my uterus.
You may disagree with those types of reasons, but they have nothing to do with religion.