Teddi Mellencamp is finding respite where she can. The Real Housewives of Beverly Hills alum defended her decision to return to her beloved horseback riding days after doctors discovered five more tumors in her brain and lungs amid her ongoing cancer battle . "Thank you for all the support," Teddi wrote on her Instagram Stories March 8.

"I am feeling great and got approval from my doctors to ride today. This makes my heart and soul happy." The Two T's in A Pod cohost—who underwent emergency surgery in February to remove tumors from her brain—went on to dissuade her followers from telling her that she shouldn't be riding horses as she goes through her health battle.

"If I see you at the show today and you have the urge to try to tell me not to I kindly ask you to refrain," Teddi cautioned. "I unknowingly rode with huge tumors in my brain for 6 months and those big ones are gone now." The 43-year-old—who shares kids Slate , 12, Cruz , 10, and Dove , 5, with ex Edwin Arroyave —added that the activity is providing her with some much needed escapism.

"When you are sick or have cancer your mental health is very important," Teddi explained. "I must keep going and give myself joy and goals. I am going to always fight to be my best and find ways to smile and enjoy my life.

Thanks for coming along this journey with me. I am in no place for negativity or discouragement." The ALL In with Teddi founder also shared a message for her father John Mellencamp , writing of the "Jack & D.