This is a tricky one. How did you frame things about children before you got married? Was it, "I never want to have children, and if you want to have a life with me, it's one without kids," or, "I'm really not sure, I'm not ready, I want it to be just the two of us first."
Because if it's the latter, people often misinterpret, "I'm not sure," with, "I want children eventually," and they'll be under the impression that kids are on the radar.
The plural of anecdote is not data, but I have two friends that became reluctant mothers (they only had one child each). Years down the line, they both confessed that as much as they love their child, if they could turn the clock back, they wouldn't have had them.
I'm of the belief that children cannot be compromised on i.e. if one partner is keen, and one partner is reluctant, the compromise isn't to agree to have just one child. The difficulty is, no one here can tell you whether you may regret it or not, or whether you want to become a mother.
For me, it's a very visceral reaction - when I think about being pregnant, or looking after a baby, or doing the school runs, etc, I start getting a horrible feeling in the pit of my stomach, like my instinct is telling me this is wrong. The book, "Is motherhood for me?" really hoped me work through my ambivalence, and when I came to the answer 'No,' it never shifted.