The country singer andWhine Downpodcast host, 39, is pregnant and expecting her first child withfiancé Allan Russell, she confirms exclusively to PEOPLE.

“I didn’t think it would ever happen again, if I’m being honest. I’ve been through a lot, so this has just been a really beautiful thing,” says Kramer, whosenew bookThe Next Chapteris out Oct. 24. “I’m letting it all sink in. It’s everything I’ve wanted and more. Allan was so sweet. He wrote me this little sticky note saying, ‘You deserve the happy ending.'”

Kramer, who’s mom to daughter Jolie, 7, and 4-year-old son Jace (withex-husband Mike Caussin), and Russell, 42, who’s dad to a 16-year-old son, began talking about expanding their family earlier this year.

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Jana Kramer and fiancé Allan Russell with her kids, Jace and Jolie.Courtesy of Clearblue

Jana Kramer Is Pregnant, Expecting Baby with Fiance Allan Russell: ‘It’s All a Blessing’

Courtesy of Clearblue

“I’ve had miscarriages, so I didn’t even know if it was possible. I’m like, yes, it’d be beautiful for us to create something becauseI love this man. It would be the silver lining with everything that happened, but I’d always get kind of down about it because I didn’t know if I was capable of carrying a pregnancy again,” she says. “I was like, well, I’m going to be 40 in December, so I was like, we have one month to try. Literally one month.”

Jana Kramer Is Pregnant, Expecting Baby with Fiance Allan Russell: ‘It’s All a Blessing’

Then, during a trip to L.A. in March toattend the iHeartRadio Music Awardstogether, “I had this metallic taste in my mouth,” recalls Kramer. “That’s what I felt withboth my other kids’ [pregnancies]. So I went to the store and gotmy Clearblue test. It said pregnant, and we just started crying.”

In early May, Kramer shared the sweet news with her daughter Jolie, who had been hoping for another sibling.

Jana Kramer and fiancé Allan Russell with her kids, Jace and Jolie.Amalia Karaman

Jana Kramer Is Pregnant, Expecting Baby with Fiance Allan Russell: ‘It’s All a Blessing’

Amalia Karaman

Now out of the first trimester, Kramer is trying to enjoy the pregnancy as she leans into the joy she’s found with Russell.

Jana Kramer Is Pregnant, Expecting Baby with Fiance Allan Russell: ‘It’s All a Blessing’

Russell —who’s from the U.K.— has been flying back and forth from England to Nashville, and the couple trynot to spend more than two weeksapart.

“He’s splitting his time because he has a 15-year-old son in England. We make it work,” she says. “He is such a fun [dad], just out there on the trampoline with the kids. He always playing with [Jolie and Jace] and it’s really beautiful to see.”

source: people.com