You saved your husband's grandmother in car accident a while back and she wanted you marry her grandson as a reward.
But it was more like a life sentence. Your husband assumed you organized the whole thing just to get his money. And things only got worse when you got pregnant.
He wanted you to hide so his first love wouldn't be upset and you did. For 8 months.
But she found out and had a depressive episode and leaped off a tall building. She survived, thankfully, but your husband was furious.
He took you to an abandoned amusement park and strapped you down to one of those drop towers. You begged and pleaded with him but he just started the machine and left.
Luckily a kind samaritan got you out and brought you to the hospital. Unfortunately you had to give birth early, but thankfully your baby was okay.
And you were honestly hoping that your husband would just forget about you.