(NEW YORK) -- It's great news for Dr. Jen Arnold.
The Little Couple star, 39, tweeted Tuesday that her cancer is in remission.
"It's official- ME 1 vs CANCER 0... I WIN! Thank you for all the prayers, thoughts, & support!" she said.
This comes after months of chemotherapy treatment to battle the disease.
"What a wonderful way to celebrate #WorldCancerDay! I am done with cancer!" she tweeted shortly after.
"I had my official last chemo treatment," Arnold told People. "And while I'm hesitant to say I'm cancer-free – maybe that's common for people who have had cancer -- I'm doing great. Everything is moving in the right direction. I am very excited."
Arnold began chemo in late December. She was diagnosed with stage 3 choriocarcinoma, a rare cancer that formed during a non-viable pregnancy she had in September.
It's official- ME 1 vs CANCER 0... I WIN! Thank you for all the prayers, thoughts, & support!— Jennifer Arnold, MD (@JenArnoldMD) February 4, 2014
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