The actress suffered from the baby blues after giving birth to son Bobby in 2010 after a traumatic 92 hour labour, and is determined not to go through the same thing again.
She told a UK magazine: “It’s already crossed my mind. But I hope I should be OK... I don’t think I’ll get it with this baby.”
She explained: “I think I got it last time because of the shock of the labour – it was extremely stressful and very scary. Four days of no sleep and then a baby!”
“Everything was negative in my mind. Thankfully my mum also had postnatal depression, so she recognised the signs.”
'I think I got it last time because of the shock of the labour- it was extremely stressful and scary'
Following the birth of her first baby, Jennifer was on antidepressant medication for six months. Describing the symptoms of the illness, she said: “I hope I’ll notice the signs straightaway – fear of the unknown and of not being a good mum.”
“If it happens, it’s treatable. I’m fine now, so if it starts again it’s something we can sort, hopefully.”
Despite her bad experience with her first birth, the star is excited about the arrival of babynumber two.
'I know it sounds weird- but I knew the pain had a purpose'
She told the magazine: “I loved the whole experience. I know it sounds weird, but I knew the pain had a purpose. Maybe I feel fine because Robbie’s so supportive. He didn’t leave my side throughout the whole of my labour. I’m so lucky.”
The 29 year-old confirmed her shock pregnancy last month after doctors had told her that cysts on her ovaries meant it was unlikely she would be able to have a second child.