Photo: Jessica Graf/Instagram

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The Amazing RacewinnersJessica Graf and Cody Nickson‘s next adventure will be … parenthood!

The engaged couple announced they are expecting their first child togetheron Instagram Monday, weeks after finding out in August.

“We actually found out while watching the finale ofThe Bachelorette. I wasn’t feeling well at all and decided to take a test even though I was pretty sure I wasn’t pregnant! I didn’t tell Cody I was taking a test,” Graf, 27, tells PEOPLE.

“I just went and laid back in bed with him, pregnancy test in my hoodie pocket. The show distracted me so I had forgotten it was in there until after it ended. Ipulled the stick out andimmediately gasped at the result!” the mother-to-be recalls.

Graf adds of Nickson, who is already a father to 6-year-old daughter Paisley, “Cody looked at me scared and confused at the look on my face when I handed him the stick! He immediately burst out into laughter and I burst into tears! Itwas the best surprise!”

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The couple first met during season 19 ofBig Brotherin late 2017, andannounced their engagementin February.

“We don’t know the gender just yet! We arehaving a gender-revealbrunch the day after our wedding so that all our family and friends can celebrate with us. We weren’t trying to get pregnant … but we weren’t NOT trying,” she says.

“As far as symptoms, I’m feeling great! My new superpower is my sense of smell. I can smell things miles away,” she adds to PEOPLE. “I don’t like to eatsome of my favorite foodswhich are very weird but there hasn’t been any vomiting so I consider myself lucky!”

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Nickson, 33, also posted the happy newson Instagram, writing, “Every day, Jessica and I thank the Lord for all the blessings He gives us. And now we are blessed with the greatest gift … a child. We are beyond pleased.”

“Thank you for all who have stood with us in support … and thank you to those who have opposed us to make all the victories worth it,” he continued. “I’m lookingforward to Jessica being my wifeand the matriarch of the Nickson establishment in Texas. What an incredible year.”

source: people.com