Health and fitness influencer Carly Douglas, a married mom of three, has died just three months after tearfully revealing she’d been diagnosed with cancer. She was 36.

The South Carolina mom died on Saturday after being diagnosed in March with stage 4 gastric cancer, her family announced in a heartbreaking Instagram post Wednesday.

“Carly fought cancer with grit and determination; while being full of hope and always pointing anyone who would listen, back to God, the One who held her in the palm of His hand,” the lengthy post said.

“Carly was joy personified, pure sunshine. It felt as though her smile was permanently stitched on her face and her laugh was constantly waiting to bubble out of her. To be known by Carly Faye, was to be loved by Carly Faye,” it continued, adding how “she treasured her children.”

Douglas shared three children – River, Faye and Townes – with her husband David.

A series of photos included in the post showed her beaming widely with her husband and kids.

“We are devastated for us here, without her. The Carly sized hole left in her family and friends’ lives will never be filled. But, we do not grieve without hope,” the emotional post said.

“We know she is whole, complete, and the most joyful radiant version of herself. More than anything, Carly would want everyone who reads this to pursue God and the eternal peace she has now. Carly Faye Douglas is home. Joshua 1:9.”

Douglas – who boasted more than 137,000 followers on Instagram where she posted about her children, health routines and workouts – had revealed in a tearful March video that doctors found a large bleeding tumor on her stomach.

She called the diagnosis “living in a nightmare” and went on to share videos and updates of her chemotherapy treatments and hospital visits.

“I think I’ve walked through every stage of grief possible, but one thing that has never left is just this overwhelming sense of peace that I’m going to be okay and that I’m gonna fight,” Douglas said while donning a hospital gown in the March 24 video.

“I have to for my kids and for so many people I love. I just know that the Lord is going to sustain me every step of the way. I’m so lucky and so appreciative for the village I have. I’m going to beat this.”