The 31-year-old actress, best known for playing Lucy Camden on 7th Heaven, and husband Michael Cameron are expecting the baby in early April. "I took seven pregnancy tests," she tells the magazine. "I went to the doctor and had two more tests and they were like, 'Bev, usually when the first one comes out positive, the rest of them will all say the same thing.'"
"Can't wait to share this journey with you," Mitchell, who currently stars on The Secret Life of American Teenager, tweeted Monday. "We are so thrilled to becom[e] parents. It couldn't be a more exciting time! Thank you for all the well wishe[s]!"
Mitchell and Cameron, 32, wed in 2008 in Italy, where they recently celebrated their wedding anniversary before attending the wedding of Mitchell's 7th Heaven co-star Jessica Biel to Justin Timberlake.