Husband doesn't want another baby!!

So my daughter is nearly one, and I am almost 100& certain that I am pregnant again, from last week Thursday I've been nauseous, runny tummy (i had constipation with my first) and since a week after ovulation I had period like cramps on and off, I never thought I would have one child let alone 2, I have got PCOS and I was not likely to conceive but with the grace of God and medication, I've got a baby girl. so to get to my point my hubby doesn't want another child, what do I do if i am pregnant, how do I tell him , is he even going to be happy about this baby. advice and opinions plz