Condolences amigo.
One thing that hasn't been mentioned, our womenfolk go through some really substantial changes when pregnant. Most react well but others go nutbars. Hormonal changes, vitamin and mineral deficiencies etc can all play a role.

Funny story along a similar line, my best bud went through a similar situation with his ex. She threw the ring at him and he did not pick it up right away in case she changed her mind, but she would have to pick it up-he would not pick it up and give it to her on his principals. Kudos to him. Finally after 4 days he picked it up and stashed it. A couple days later she tells him she wants the ring back and he tells her he doesn't have it.
Her:
"Where the hell is it"?
Him:
"I don't know, maybe the dog ate it, I saw him playing with it".


The dumb twat believed him and spent the next week poking through the dog shit in the yard.
Poetic justice.