Mark Zuckerberg has announced that he and his wife Dr. Priscilla Chan are expecting their first child.  The Facebook founder took to... well, Facebook, to announce that they are expecting a baby girl after years of trying and three miscarriages. Image via Facebook.  Along with a gorgeous photo of himself, his wife of three years and their dog Beast, the entrepreneur extraordinaire shared a moving message. He wrote: "You feel so hopeful when you learn you're going to have a child. "You start imagining who they'll become and dreaming of hopes for their future. You start making plans, and then they're gone. "It's a lonely experience." The couple married in 2012.  He says that the pregnancy is far along now and that the risk of loss is low. Chan and their future daughter are both healthy. The 31-year-old discusses the fact that talking about these subjects is still taboo, but that he wanted to open up to break the stigma. This couple suffered three miscarriages.  He wrote: "Most people don't discuss miscarriages because you worry your problems will distance you or reflect upon you—as if you're defective or did something to cause this. "So you struggle on your own." Priscilla and Mark were college sweethearts and dated for 9 years before tying the knot in 2012.