How do I (F29) tell my fiance (M42) I’m pregnant after his vasectomy?

My fiance got a vasectomy about a month and 1/2 ago and I removed my iud after the 15 days of recovery. I figured he would wear condoms or something, but he said the doctor tested his sperm so he can have unprotected sex. Well, now I’m pregnant. He really really doesn’t want a child. I suggested we wait three months before having u protected sex, but he insisted he was fine. I told him when I was removing the IuD, and even asked if he thought that was an appropriate amount of time. He agreed.

The big problem is that he said he would leave me if I got pregnant on purpose. I didn’t, obviously, but I don’t think he will believe me. Would it be horrible of me to hide it for a few months until I come up with a game plan? Ab0rtion is illegal in my state, so that’s not an option. Even if it was, I want the baby. I just don’t know what to do. I am 90% sure he will leave me. We have been together for 2.5 years, but he is adamant that he doesn’t want kids.

I already have one child. I was fine with more or fine with no more.