This Morning's Holly Willoughby has finally shared the reason why she was absent from the show earlier this week.The presenter wrote a message on her Instagram Stories to share the news that two of her children had COVID-19 symptoms – to stay within government guidelines, Holly and her family had to isolate while they awaited test results.Holly said that all of the test results were negative and that her children are feeling better – she also thanked fans for their messages of concern and said that they can expect to see her live on the show on Monday.The news comes after fans of the daytime TV show wondered why Holly wasn't presenting her usual slots.