Jennifer Lopez worried that she would never have kids

New mom Jennifer Lopez has revealed she used to worry that she would never have kids.

"You start getting older, you think to yourself, maybe [having kids] is just not meant for me," Lopez -- who gave birth to twins, Max and Emme in Febuary -- told People magazine.

"I knew there was nothing wrong with me. I knew that I could. Deep down, I really wanted it badly.

"Even after one year, two years, three years, you know, you start thinking to yourself, 'well maybe,'" added the star.

And 38-year-old Jennifer, who is married to singer Marc Anthony, admitted she took three pregnancy tests to confirm her good news.

"I think I really got to a point where I was like 'This is not gonna happen for me.' (But by the third test I took) it was right there in my face," she said.

"At that point I looked and I said, 'Marc, this could be me'. I had tears in my eyes."