Lifestyle Health Woman 'in Shock' Upon Learning She's Pregnant with Quadruplets After Going to Doctor for Sore Throat Katelyn Yates is a 20-year-old nursing assistant in Illinois By Jordan Greene Jordan Greene Jordan Greene is Society and Culture writer-reporter at PEOPLE. She has been working at PEOPLE since 2023. Her work has previously appeared on TODAY.com, The Forward and The Daily Orange. People Editorial Guidelines Updated on November 15, 2024 12:11PM EST Comments Katelyn Yates went to the hospital on April 1 with a sore throat, but she left with bigger news: she was pregnant with quadruplets! In an interview with Today, the 20-year-old nursing assistant from Illinois explained that it all started when she arrived at the emergency room with pain in her throat, and was told she needed an X-ray to figure out what was wrong. But before she could have one, she'd have to take a pregnancy test, since the radiation can be harmful for fetuses. When she got her results back, the level of her human chorionic gonadotropin (hCG) — the hormone produced by the placenta during pregnancy — was "off the charts," she was told. Parents of Micro-Preemie Discover Build-A-Bear Clothes Fit Their Baby Perfectly: 'One Day We'll Show Her' (Exclusive) Katelyn Yates, with her fiancé, after giving birth to her quadruplets. Katelyn Yates “I was completely in shock,” Yates told the outlet, adding how she thought the doctor was playing a prank on her, given it was April Fool's Day. She adds how her now-fiancé, Julian Bueker, 21, whom she'd only been dating for six months at the time, was "so excited" and kept her calm. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Baby Max. Baby Elliott. Baby Max. PHOTO: Katelyn Yates Baby Elliott. PHOTO: Katelyn Yates Yates went on with the pregnancy, which turned out to be complicated. She was ultimately diagnosed with preeclampsia, which can cause persistent high blood pressure after 20 weeks. “I couldn’t breathe on my own,” Yates said, adding how during her third trimester her liver and kidneys started to fail, too. Stranger Stops Mom in Grocery Store, Makes 'Odd' Remark About Her 9-Month-Old That's Caught on Camera (Exclusive) Baby Elizabeth. Baby Zya. Baby Elizabeth. PHOTO: Katelyn Yates Baby Zya. PHOTO: Katelyn Yates Then, on Oct. 17, at 28 weeks and 4 days, Yates gave birth to the quadruplets: Elizabeth Taylor, Zya Grace, Max Ashton and Elliot Ryker (the latter two are identical twins, per Today). The babies were born at HSHS St. John’s Hospital in Springfield, Ill., by C-section. Yates said of all the babies, Elizabeth was the smallest, weighing 1 lb., 2 oz., while Max, the biggest of them, weighed 2 lbs., 6 oz. Now, “they’re doing phenomenal. They are gaining weight and growing,” Yates told Today. “Elizabeth is about six grams away from reaching 2 lbs.” “It’s amazing to me how well they are doing,” Yates added. “Just a few weeks ago, they were the size of my hand.”