The glamour model revealed her plans with husband Peter Andre on GMTV earlier today.
Price announced that the couple would begin trying for a third baby together after running this year's London Marathon.
"After the marathon, he's going to get lucky this year, for the first time," said Price. "I can 100% guarantee that I will be pregnant sometime this year."
Andre commented: "Just so you know, it's not her that plans the dates, it's not like 'Oh, you can do it now', it's not like that. We've both agreed that we are going to try for a child after the marathon"
When Andre said that his wife couldn't "guarantee" that she would get pregnant, she argued: "I know my body Pete and I know how strong you are."
Price and Andre have one son, Junior, 3, and one daughter, Princess Tiáamii, 1. The model also has one son Harvey, 9, from a former relationship.