The 28-year-old model and bo-po activist took to Instagram this week to announce that shes expecting her first child with her boyfriend Philip Payne.

"Its not just the two of us anymore, we're soon to be a family of 3 , she captioned a snap of the pair holding a positive pregnancy test.

RELATED:Iskra Lawrences Red Carpet Look Is Turning Heads For All The Right Reasons

But later, during an Instagram Live, Iskra admitted that the news had come as a total shock to them both. Especially seeing as shed been on birth control at the time of conception - and had been for the past 11 years.

"It was not planned, and it was a surprise, and it was a terrifying surprise," she said. "I was crying not out of joy, not out of happiness, but out of fear."

I was waiting and thinking in a couple of years...that's when we'll start a family. But that isn't always the case."

She explained that she probably wasnt as stringent at taking the pill as she could have been: "In my head I was like, even though I travel and there are time differences, I thought I was taking it consistently.

FYI, even missing just one dose or taking it two hours later than usual can seriously up your chances of falling pregnant. Plus, there are certain factors that increase this risk, like mixing certain medications or taking antibiotics.

But regardless of whether it was planned or not, Iskra who is due in five months - cant wait to start her journey to motherhood.

Ive never been more excited to meet anyone, and Philip and I are in love with our mini baby P bump, she added on IG.

Congrats to the happy fam!

RELATED:Turns Out The Pill Is More Effective If You Skip Your Period

More here:
Iskra Lawrence Just Revealed She Got Pregnant While Taking The Pill - Women's Health