Blink-182 ended up postponing its tour to allow Travis Barker to return home and tend to an urgent family matter.

Barker has not directly revealed what led him to leave his band's now-postponed tour, but he hinted at his online posts that the urgent family matter was medical-related. It led fans to worry that something might have happened to Kourtney Kardashian, who is currently pregnant with her first child with the drummer.

After the confirmation that Barker visited a hospital with Kardashian, more details emerged revealing what the couple went through.

Kourtney Kardashian Speaks Up for the First Time Since Hospitalization

On Instagram, Kardashian revealed that she underwent an urgent fetal surgery earlier this month to save their baby boy's life.

The Poosh founder shared a black-and-white photo of her husband holding her hand, writing in the caption that she did not expect the health emergency since she had three easy pregnancies in the past.

"I will be forever grateful to my incredible doctors for saving our baby's life," she wrote. "I am eternally grateful to my husband who rushed to my side from tour to be with me in the hospital and take care of me afterwards, my rock. And to my mom, thank you for holding my hand through this."

The 44-year-old "Keeping Up With the Kardashians" alum revealed she was "crippled with fear" when she was rushed to receive the emergency medical procedure. She concluded her message by expressing how grateful she is to God for allowing her to be discharged from the hospital with her unborn baby boy in her tummy.

Barker also tweeted on X Wednesday to hint at the successful "life-threatening emergency surgery" and thanked everyone for their support.

The drummer has two kids - Alabama and Landon - and stepdaughter Atiana with ex-wife Shanna Moakler. Meanwhile, Kourtney shares Penelope, Reign and Mason with Scott Disick.

READ ALSO: Travis Barker, Kourtney Kardashian's Pregnancy News Staged? TODAY Hosts Not Buying 'Surprise' News

Blink-182 Postpones European Tour Dates

Due to the emergency, Blink-182 canceled its performance at the OVO Hydro in Glasgow, Scotland, on Friday and Saturday.

"Due to an urgent family matter, Travis has had to return home to the States," the update read. "The Glasgow, Belfast, and Dublin shows are being postponed. More information in regards to his return to Europe and rescheduled dates will be provided as soon as available."

Blink-182 is set to visit Dublin and Belfast soon as part of their shows.

READ MORE: Travis Barker Latest Health Condition: Drummer 'Doing OK' After Hospitalization?

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