Mom shares heartbreaking 'before-and-after' photos following death of 4-year-old son

These "before-and-after" photographs show the huge hole left in a mother's life following the death of her 4-year-old son.

In the first photo, Nolan Scully of Leonardtown, Md., is seen lying on the bathmat while his mother, Ruth, showered so that he would not be alone.

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Read: Bird Comforts Grieving Mother as She Visits Late Son's Grave on Anniversary of His Death

In the second image, taken two months after Nolan lost his battle with a rare soft tissue cancer, the mat where the boy once laid his head is empty.

"Two months," his mother wrote as she shared the images to Facebook. "Two months since I've held you in my arms, heard how much you loved me, kissed those sweetie 'pie' lips. Two months since we've snuggled. Two months of pure absolute Hell."

Nolan was diagnosed with Rhabdomyosarcoma in 2015 and underwent multiple surgeries and rounds of chemotherapy.

In his mother's Facebook post, which has been shared hundreds of thousands of times on Facebook, she described their final days together, laughing, playing and even planning his funeral. Then one evening, she got into the shower and emerged to find her son in a coma.

"When I opened the bathroom door, his Team was surrounding his bed and every head turned and looked at me with tears in their eyes," she wrote. "They said 'Ruth, he's in a deep sleep. He can't feel anything.'"

When she ran to him, he briefly opened his eyes and told her: "I Love You Mommy."

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"At 11:54 p.m. Sgt. Rollin Nolan Scully passed away as I was singing, 'You are My Sunshine' in his ear," she said.

Ruth remembered her son as someone who always wanted to help others.

"Now I'm the one terrified to shower," she wrote. "With nothing but an empty shower rug now where once a beautiful perfect little boy laid waiting for his Mommy."

Watch: Boy Who Fought Cancer and Found the Love of His Life at Age 8 Has Died, His Family Says

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