I haven’t experienced it, so my advice would be to make the decision as if you’ll be a single mother or not, then talk to him about your decision.

Your relationship is new. If it doesn’t work out and you are then a single mother, would that be okay for your life?

If you have an abortion and the relationship ends, will you regret having it?

He may be amazing, and y’all might end up married with more kids down the line. Whether or not you start a family now, your opinions are the most important above anyone’s right now. Speak with a couples therapist if that could help. I wish you well.