Mellencamp said on social media after undergoing both radiation and immunotherapy the day before that she feels “so tired and run down, but I know it’s going to get better again.”

Mellencamp said on social media after undergoing both radiation and immunotherapy the day before that she feels “so tired and run down, but I know it’s going to get better again.

” Mellencamp told US Weekly earlier this month that she’s in the fight of her life after the cancer spread in her brain and to her lungs.

“I’m fighting for my life,” Mellencamp told the outlet. “But also for my family’s life and all the people I love.

“She went on to say that she instantly thought of her three children, Slate, 12; Cruz, 10; and Dove, 5, and where they factor into the family mausoleum in Indiana.

“He’s like, ‘Well, there’s going to be the top five and then we’re gonna have little areas around it, and then that’s where everyone’s going to get buried,’” she continued. “He goes, ‘You’re doing your will right now, so you may as well put it in there.’”

In the end, she said, “I think I agreed to be in the mausoleum,” and joked that someone she met not too long ago inspired her to get “hot girls never die” put on her tombstone.

The “Real Housewives of Beverly Hills” star was hospitalized with multiple brain tumors earlier this year.

During a procedure to remove the masses, doctors found two additional tumors in her lungs.

Mellencamp, 43, admitted that life expectancy rates for cancer patients has been on her mind while she’s undergoing immunotherapy for treatment.

Teddi Mellencamp is remaining hopeful as she fights Stage 4 cancer despite doctors warning she has a 50% chance of survival

Real Housewives’ star Teddi Mellencamp given ’50/50′ chance of surviving cancer