AceShowbiz - Country star Jana Kramer is shutting down the baby factory after she gives birth later this year, insisting she's too old to get pregnant again.

The former One Tree Hill star and her husband, Mike Caussin, revealed they were preparing to welcome a sibling for their two-year-old daughter Jolie in June.

The 34 year old, who reconciled with Mike last year (17) after separating in 2016, has since announced she is expecting a son, and now she reveals she doesn't want to get pregnant again.

"I'm gonna be 35 in December and after 35 it's basically a geriatric pregnancy," she tells Us Weekly magazine. "I wanna be done. I wanna live the rest of my thirties getting in shape and just taking care. We wanna adopt too".

"If we have anymore, it'll be adoption," Mike adds before Jana quips, "So just nothing else out of me!".

Jana and Mike will welcome their baby boy in November, and they are trying to carve out as much time together as possible before they become parents to another baby.

"I'm like, 'Honey, all I want is just intentional time together. You make time to go to work, you make time to do these things, make intentional time'," she laughs.

Jana's current pregnancy comes shortly after she revealed she had previously suffered a series of miscarriages during her journey to parenthood, which included undergoing in vitro fertilisation treatment, before falling pregnant naturally with little Jolie and again with her unborn son.

She also recently revealed the pregnancy saved her marriage to the former American footballer.

"Babies and having other kids don't save a marriage but for us, this baby truly has been a saviour for us in a way that we've really done our work and gotten dirty," she told People magazine. "We're bringing a child into this world (so) we have to be there for each other and continue to do our own recovery work for him and me and be in a place where we're bringing him (our son) into the best environment possible".