Binky Felstead's "heart stopped" when she found out she was pregnant.
The 26-year-old star initially put down the fact she had missed a period to her fitness regime so was stunned and "overwhelmed" when a pregnancy test confirmed she was expecting a baby with her on/off boyfriend, 'Made In Chelsea' co-star Josh 'JP' Paterson.
She said: "I thought I wasn't on my period because of my training and my strict diet.
"I was training hard for my Reebok shoots.
"My first reaction when I saw [the positive test], honestly? It was 'S**t'.
"My heart stopped. I burst into tears.
"Josh and I weren't talking at the time and I was really overwhelmed."
The pair are not officially together at the moment and though they do go on "dates", they won't be rushing their relationship for the sake of the baby.
JP said: "Where we're both being very mature is with the fact that you should never get back together just because there's a baby in the picture.
"It has to be for the right reasons.
"We love each other a great deal and there's no pressure - but you do have to take the past into consideration, where there have been a few hiccups. We're just taking it very easy."
Binky added: "But we're not dating anyone else. We go on dates and hang out. It would be silly for us to rush back into anything but we want to focus on the future now, rather than the past."
And even if they don't get back together, the pair both think they are having a child with the right person.
JP said: "Binky is kind and caring and has all the qualities of a good mum.
"She's honestly going to be amazing - there's not a doubt in my mind."
Binky added to HELLO! magazine: "I've been very lucky. If I were to get pregnant by anyone, he's not a bad one. Not only is he good looking, he's a good listener, very calm and very loving."
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