Whenever someone says I want to have a baby or even I want to get married and especially if they are single, I always question why. The reason is, there's a difference between being okay with getting married some day and wanting to get married when there isn't anyone on the radar. I feel that you "want" to get married when you meet someone and you know this is the person you want to marry. Similar to wanting to have a child. Not because someone's just available.
It seems you don't care who's the mother of your child despite how a family dynamic influences a child. You said that you love this woman, but do you even like her? Again, two different questions.
I feel in general, you should be with someone for the right reasons and not because, I don't know want to be alone, everyone has someone, I trying to conform to societal demands, someone has to have my baby.