Willoughby gave birth to Chester in September last year and admitted she thought it would be easy the third time round.
However this week, the 34-year-old has revealed that the past few months haven't all been plain sailing.
“Honestly, Chester felt like my first. I think the biggest thing I’ve learnt along the way is just to give yourself a break. We’re all so worried about doing everything so perfectly," she told the Mirror.
Willoughby has two other children: Harry, six and Belle, four and she said she thought that would have given her enough practice to handle baby Chester when he arrived eight months ago.
But Chester has been poorly, suffering from bad reflux, where a baby spits up anything that is swallowed.
Willoughby also said Chester had suffered from tongue tie, which can affect babies feeding and make it hard for them to attach to their mother's breast.
"Actually, all they need is your time and your love. I know that sounds ridiculous, but it’s true," she told the Mirror.
Willoughby is currently on maternity leave from This Morning, but it looks like she is sorely missed by her fans and viewers...
We miss you too, Holly.