Holden, 40, was seven months pregnant when her baby boy, with music executive husband Chris Hughes, stopped moving, and was then stillborn earlier this year.
She told ITV1 show Lorraine: “I’m a naturally really optimistic girl and I can – my husband and I ... we’re not dramatic people... we can go on and have more children and our future’s bright.”
The star, mother to five-year-old daughter Lexi, added: “You have to turn negatives into positives, and try and see everything as a blessing and that’s exactly what we’ve done.”
Holden said her fans had been amazing, adding: “I’ve had unbelievable support and it truly has got us both through it, really.”
The actress, who decided to wait until she was six months pregnant before announcing the most recent pregnancy, after losing a baby last year, has thrown herself into work, appearing in the West End show Shrek The Musical as Princess Fiona, which opens next month.
She also appears on the judging panel of the new series of Britain’s Got Talent. with comedian Michael McIntyre and former Baywatch star David Hasselhoff.