Singer Janet Jackson is once again delaying dates for her 'Unbreakable' tour, due to undisclosed medical orders tying into her planning of starting a family with husband Wissam Al Mana. Her public statement on Twitter reads, "We're in the second leg of the tour, and there actually has been a sudden change. I thought it was important that [the fans] be the first to know. My husband and I are planning our family, so I'm going to have to delay the tour. Please, if you can, try to understand that it's important that I do this now. I have to rest up; doctor's orders. But I have not forgotten about you."