Katie Clark — a star of the hit show “Bringing Up Bates” — is going through a tragedy … announcing she lost her pregnancy.

The reality star announced the news on social media Friday … sharing a clip which begins with her finding out she’s pregnant.

She then buys baby clothes and tells her husband Travis the news … with the two happily embracing — before the clip changes drastically.

Katie captioned the video, “I will spend the rest of my life missing you 🪽.”

Katie and Travis were expecting their third child. Their daughter, Hailey, turns three next month. Their son, Harvey, turned one in September.