I would think a Dom would be more concerned for taking care of you, not less. But whether he is your Dom or not is irrelevant. He has completely and utterly disrespected you, lied to you, and risked your health in an unforgivably cavalier fashion. If I were you, my relationship with him would be over. Get tested immediately. End of story.
Hot chick in the city.
Oh, oh, can't you see? Love is the drug for me.