Abstinent CEO's Pregnant Sweetheart

Bella lost both parents young and was raised by a stepmother who made sure she knew what she cost. She works whatever jobs she can find to cover tuition and food, spends nothing on herself, and still ends up with her stepsister taking the money she managed to save. At the point where she has run out of options she ends up in bed with Ian, a CEO known for being cold and for not touching anyone. She gets pregnant. When Ian finds out, he is not angry. He is overjoyed, because he had been told he could not father children. Everything about Bella's life inverts after that. She goes from a girl nobody in her own household would spend money on to someone Ian's entire family arranges itself around, and she has to learn how to be treated well by people who have decided she matters.