I’m looking for a manhua

There was this manhua I read ages ago and forgot the name of. It got discontinued so I deleted it off my list basically its abo. the story setting was sort of disease that wiped out humans except for the abo. The mc gets married to the unwilling ml, who has a child (he got SAd and that’s why he has that kid) when they were young they went to the same school and slept together once. Mc got pregnant but the baby didn’t survive (because of the disease) so basically the ml is awful to him, by the end mc signs divorce papers given by mls father and leaves, but he’s pregnant and then gets the disease(?) and they get back together. I’m sure I missed a lot of things but can anyone tell me the name?