He must be so completely smitten by you that he has completely missed the whole transgender information on your profiles.
And you are obviously passing super well! Congratulations!
It is possible that he has no idea what being transgender means. I would expect someone to ask about or research things they may not be sure about in regards to a love interest.
Do you feel the same way about him as he does about you? If this relationship is serious and something you can see being a long term thing, you will have to make sure he knows everything that he needs to know.
Maybe start by finding a way to ask him if he has noticed the transgender status on your accounts. If not, then that may bring it to his attention in a less uncomfortable way. If he has seen it, then the next step would be to ask him if he knows what that is.
If he asks about why you can't have children, then telling him you don't have a uterus would also create an opening for deeper conversations.
Unfortunately, it seems that he has made it pretty awkward already. Like everyone else in your life, your can't predict how they will respond. I have had all different kinds of reactions from religious friends and family that I've told. So it isn't a definite that you receive a negative response.
Keep us updated on how things go!
Lacy