Need advice asap 😭

My husband & i had a 3some a few weeks ago with his friend ( we'd all been drinking ) now he wants a 3some with a girl. Im already insecure about myself and sometimes feel like he doesn't even love me. Now he brings this up, and i said if you got another girl pregnant it'd probably be automatic divorce. HE BLEW UP! Yelling, cussing, saying he doesnt want a baby with me anymore ( we're trying for #4) and it really broke me down y'all. Idk do i just go through with it because we had one with another guy? Even though it makes me sick to think about it??