The former 'Coronation Street' star says she will have to wait until the end of summer before trying for a baby with her footballer boyfriend, Scott Sinclair, when she finishes her treatment for the skin condition.
She told OK! magazine: "I would like to try at the end of summer, maybe.
"I'm on [acne drug] Accutane because I get quite bad acne – you can't get pregnant on the drug, and it takes a while to get out of your system.
"I want to make sure I'm really, really, healthy before I try, check my hormones and stuff. I'm going to love being a mum."
Helen and her footballer boyfriend, Scott Sinclair, plan to start a family this summer
And the model and actress is hoping for a big family too, saying: "I'd like four eventually. I'd like to have two in my twenties and two in my thirties."
Helen first revealed her pregnancy plans last month, during an interview with the Sun, in which she gushed about her relationship with Scott.
“Things are great with us at the moment," she told the paper. "We might try for a baby in the summer.
"I’ve always said I want children, and the time might be right soon. But let’s wait and see what happens.”
Read the full interview with Helen in this week's OK! magazine, out now. www.ok.co.uk