Jessie Cave has issued a stark warning to fans, urging them to go straight to A&E if they notice anything different about their children after her newborn baby Abraham tested positive for coronavirus.The 33 year old, who also shares Donnie, six, and four year old Margot with comedian Alfie Brown, opened up on how her three month old is coping while speaking on ITV's Lorraine show on Tuesday 12 January.The Harry Potter star, who is most well known for playing Ron's love-interest Lavender Brown in the film series, explained: "Nothing has gone to plan.