By Lucretia Munro Frankie Bridge left her fans concerned after she posted a message on social media stating that her depression had “crept” up on her once again. The 35 year old Loose Women star, who is a mother of two, has made no secret of her past battles with anxiety and depression in the past. But she has now bravely shared with fans that she feels “unmotivated” and “low”. Taking to Instagram, the former Saturdays singer posted a series of pictures which included a handwritten message that read: “Just because it’s taking time doesn’t mean it’s not happening.” Alongside the snaps she wrote…