WOMB FOR 1 MORE?

Preg ma’s 3 ‘twins’

Oh, baby, baby — oops, she did it again!

A mom-to-be has conceived a third child — days after learning she was pregnant with twins.

It’s a rare case of superfetation, when a separate egg is fertilized by sperm in the womb days or weeks after a pregnancy has already occurred.

The TikTok star known only as @TheBlondeBunny1 — who entertains her more than 235,000 followers with belly-baring bump updates — is 17 weeks along with her “triplets.”

In one viral video, which had 5.2 million views as of Tuesday, the growing mama explains what’s going on inside her belly.

“We knew it was two separate pregnancies,” she says. “When you ovulate, you ovulate for 24 hours. And sperm can live in your body for up to three to five days. So our first two babies are 10 and 11 days older than our third baby.”

She says her doctors wanted to confirm it was superfetation and not twin absorption or a malnourished baby, so she’s been having ultrasounds every two weeks.

“Sure enough, it’s been hitting every single milestone like it’s supposed to, growing at a healthy rate, just 10 to 11 days behind the first two babies we have,” she says of

Baby No. 3.

Superfetation is so rare that “there are only a handful of documented cases,” a 2016 Self magazine report said.

In 2017, The Post told the story of a surrogate mom who thought she was carrying identical twin boys — when, in fact, superfetation had caused her to conceive her own child with her husband during the same cycle in which the intended parents’ embryo was transferred to her uterus.

In @TheBlondeBunny1’s case, “This happened to us because my hormones didn’t stop me from ovulating, I ovulated another time,” she says in one clip.

In another, she says her mucus plug had yet to form, which allowed a second pregnancy to happen.

She was not taking any fertility drugs at the time and does not have a bicornuate uterus.

“We’re lucky enough that they’re close enough [to] all have the same due date. We just need to get the third baby past the 28-week mark and hopefully carry them to 32, maybe even 35 [weeks],” she says.

Despite the surprise, the TikToker is excited to become a first-time mom.

“We wanted to be parents, and God said, ‘Watch out what you ask for,’ and gave us three at once,” she beams.