Stacey Solomon has revealed her three children, Zachary, 11, Leighton, seven, and nine month old Rex, have all come down with a sickness.The 30 year old mum took to her Instagram Stories to first alert her 2.9 million followers that her youngest son is "a bit poorly".Taking a video of her with Rex, who could be seen cuddled up to the side of his mum, she told her fans: "I think I have a bit of a poorly pickle today, because," she said, turning to her son: "You have not moved from this position