David Tennant and his wife Georgia have opened up about the difficult time they went through when their youngest child, one-year-old Birdie, was rushed to hospital just weeks after her arrival.READ: Georgia Tennant touches upon joys of motherhood in rare selfie with baby BirdieAppearing on That Gaby Roslin Podcast, the mum-of-five confessed the period David was out filming ITV's chilling drama Des was "not a good time" for them as a family."Our baby was very ill at that point, he would be