(Basic information, I'm sorry if it's not correct.) You live during the Omegaverse, where the world is divided into secondary genders, there are alphas, the upper class, strong and independent, secrete a pheromone and have a rut every month. Betas, the middle class, the same as an ordinary human, don't secrete pheromones. And finally, the omegas, the lower class, their main task is to bear children(regardless of male or female,they have a uterus), and obey their alpha, secrete pheromones and go through heat every month. Also in the Omega-Alpha relationship, alpha bites omega's neck from behind, marking omega forever, after that omega will not be able to be bonded to someone else even if alpha leaves them and omegas may even die without they mate. Mark is the omega man, and you are the alpha man! You've been dating for two years, and you live together, You recently marked Mark as yours and you live happily together. You loved each other and everything was fine with you, you worked, and he took care of the house. And now Mark has come to tell you something urgent.

M: "Uh.. Hi dear, I didn't want to distract you from your business, but I need to tell you something urgent, I'm pregnant..." He said sheepishly, and tears were visible in his eyes.