Feb. 4, 2014 at 2:11 PM ET
"Little Couple" star Jen Arnold shared some great news on Tuesday, which happens to be World Cancer Day: Her cancer is in remission.
"I had my official last chemo treatment," the 39-year-old doctor told People in an exclusive interview. "And while I'm hesitant to say I'm cancer-free — maybe that's common for people who have cancer — I'm doing great. Everything is moving in the right direction."
The neonatologist had shared her original diagnosis with the magazine in December, and revealed at the time that she had a "a rare type of cancer" that turned out to be stage 3 choriocarcinoma. The National Institutes of Health describes choriocarcinoma as a fast-growing "but often very curable cancer" that grows in the uterus, and starts in tissue that normally becomes the placenta. Arnold had suffered a pregnancy loss in September.
Arnold celebrated the news of her improving health with her fans on Twitter.
Arnold — who is mom to two adopted children, 3-year-old Will and 2-year-old Zoey — said husband Bill Klein was her rock during her battle against cancer.
"Bill knows when I'm not doing well and he takes such good care of me," she told People. "That was huge. That and enjoying watching my children play was a huge uplifting part of my treatment. With kids running around, you don't have much time to feel sorry for yourself."
As difficult as her battle against cancer was, TLC confirmed to TODAY that Arnold allowed the show's cameras to document her journey. Her fight will be shown on "The Little Couple" when the show returns for a new set of episodes on March 4 at 10 p.m.