She told People at the Miami event for the launch on Wednesday: “I was doing IVF during the shoot."

Read: Chrissy Teigen Model reveals sex of her baby

According to her, 'I was getting my shots and everything in , I had a little medical kit. It was hard because you bloat from it, and you bruise – if I hit the wrong area.'

She also explained that they would cover any marks with bruises for the photos.

The 30-year-old wife of JohnLegend, went on to say that she would consider posing pregnant, but not for personal use.

Chrissy and John are expecting their little bundle in April.