United Kingdom, April 15 -- Whitney Port suffered five miscarriages after the birth of her son.

The 40-year-old star had an "extremely easy" first pregnancy with Sonny, now seven, but she has opened up about the struggles she and husband Tim Rosenman have faced in trying to expand their family further.

In a preview of her appearance on the 'SHE MD' podcast obtained by People magazine, Whitney said: "My first pregnancy was extremely easy. I went off my birth control and within a couple months I was pregnant. I had no issues, no complications.

"I didn't feel great, but it was a completely healthy pregnancy. I was 32.

"About a year after I had Sonny, I got pregnant again and then miscarried at around eight weeks, and I had another miscar...