In the Coronation Street actress's forthcoming book, From the Heart, mum-of-three Kym explains how she 'lost it' as the curtain closed on her baby's coffin.
Kym writes: 'I was a complete nervous wreck. But I'm not one for taking medication and didn't get any anti-depressants.
'Looking back, maybe I could have done with something on the day of the funeral. It was horrendous.
'It was the worst day of my life. I broke down at the crematorium. When the curtains closed on my baby's coffin I just lost it.
'I started screaming and my legs buckled. I thought I was going to die of a broken heart. No one should have to go through that.'
Kym says she keeps baby Archie's ashes in a box at home and kisses it every day. Her baby was stillborn at 22 weeks in 2009 and she has since had a daughter Polly, after a nerve-wracking pregnancy and premature birth.
Will you be reading Kym's book, or do you find it all just too sad?