SAN ANTONIO Sarah Green was surprised when she learned she was pregnant with her fourth child, but she was not expecting she would also test positive for COVID-19. RELATED: Many pregnant women are testing positive for COVID-19 in San Antonio, health officials sayNikki McIver-Brown is a certified nurse mid-wife and helped Green deliver her youngest daughter two years ago. The State of Texas has designated University Hospital as a Level IV Maternal Care Center, one of a select few in the state. University Hospital has specially trained teams and equipment available to care for women with high-risk pregnancies and can respond quickly and expertly if problems arise. Green is looking forward to her birth at home and hopes her experience with COVID-19 will help other expecting mothers.