It was a cold and overcast morning in November, but one full of promise for Guo Meiyan and her husband: They would finally get a chance to start a family. As Ms. Guo, 39, was wheeled on a gurney into a hospital room where a doctor transferred her eggs, which had been harvested and fertilized, back into her uterus, she also felt a sense of dread. “If the transplant is not successful, all the money we spent will be wasted, all the pain I endured will be wasted, and we…