By Lizzie Parry A stunned couple whose first child was born though a pioneering IVF technique are expecting their second baby after conceiving naturally. Gemma and Simon Potter tried in vain to start a family for four years before becoming the first parents in the UK to have a child using a new IVF procedure. But two years after the arrival of daughter Isabella, the couple were shocked to discover Mrs Potter was pregnant again - after a natural conception. The new addition to the Potter family is due on Boxing Day. Scroll down for video Simon and Gemma Potter are expecting their second child this December after conceiving naturally, two years after their daughter Isabella was born via IVF
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Gemma and Simon Potter spent four years trying for a baby to no avail
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Became first parents in the UK to have a child using a new IVF procedure
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Their daughter Isabella was born two years ago
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Mrs Potter was shocked to discover she had fallen pregnant again
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They conceived naturally and are expecting their second child in December
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Fertility expert said it is rare but couple's who have been through IVF can fall pregnant naturally afterwards
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Dr Geetha Venkat said it could be down to pregnancy stimulating the ovaries
I screamed ‘two pink lines’ at @placeholder, and then I didn’t speak for about 20 minutes out of shock.'