ADVICE NEEDED ANYONE?

So I met this man, I'm 23 and he's 38. We started talking online, after we became a match on an app, for the purpose of marriage.
One conversation led to the other, because I do ask a lot of questions.
I am a virgin and what struck me the most, is that, he said he wants me to get pregnant for him, before he marries me. His reason was "Experience"
I told him over text, that I agreed to his terms.
I'm scared that if he does get me pregnant, how am sure he's going to commit. At this point, my mind is clouded.
I don't know what to think or do anymore.

Please advise, anything helps!
ADVICE NEEDED ANYONE?
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