The 35-year-old model, who welcomed her fourth child Jett Riviera in August, apparently learnt about her fifth pregnancy after falling ill with stomach pains during a family holiday in Cape Verde in April, reported Daily Mirror.
When Price underwent a scan, the model got to know that she had been pregnant for six months.
Riviera is Price's first child with third husband Kieran Hayler. Her other kids are Harvey, Junior and Princess.