I’ll spoil it for you
It said he got pregnant from a previous time they did it when he was in heat, maybe the condom didn’t work, idk, but yeah, it would be seriously ridiculous to manifest pregnancy symptoms right AFTER they did it, i found that way too insane to believe, glad the author put a bit more realistic stuff into it
He is 3 weeks pregnant but his attitude gets worse. He wants to abort the child but the rich guy, I forgot his name, said to not do that and he will support the baby. The omega then agrees but he wants money. I think it was 50 million won, after the baby is born. The alpha agrees but wanted something in return as well. An ultrasound. He really wants to have this child and it is so cute. The omega doesn't want the child but I hope he starts to change his attitude and views.

Okay so, did he vomit in the end? Is that a symptom of his pregnancy or something? Or it was just a mere coincidence?