She said: “We’ve toyed about doing it in Spain, so his family can come, and we've even thought about doing it in a registry office or a hotel in Manchester, just the two of us, and then have a big party after.
"But I think now we want to wait until Thiago is a bit older, so maybe next year or the year after, as he's only two. If he's a bit older, he could be involved in it, which would be really nice."
Gemma also revealed that she is being tested for perimenopause, the natural transition a woman experiences before she goes through menopause.
She said: "In terms of children, I'm fine with it because I always wanted two, I never wanted more, and we've been lucky enough to have a boy and a girl.
"I'm actually having what they call a Dutch test after listening to a podcast, and it will let you know whether you are perimenopausal or not.
"I've not had any symptoms yet, I still feel okay but realistically, I'm 41 this year, and there will be changes coming."
Gemma is releasing a new range of skincare for her collection Gem + Tonic, which features a face cream, hair mist and a moisturiser.
She said: "It has been such a rollercoaster, we've had so many bumps along the way, but I really just wanted to do it for every busy woman out there, who are juggling careers and relationships and parenthood.
"For me, it has been about finding that balance with science and nature, and it's just ideal for people who don't have time for a nine step skincare routine."
Gem & Tonic will be available from 17th September at www.gemandtonicshop.com