Gary Carter’s condition has worsened with the discovery of new tumors on his brain, his daughter said Thursday on the family’s blog.

Six months ago, Carter, 57, the former Mets catcher, was found to have an aggressive brain cancer, glioblastoma, that has been treated with radiation and chemotherapy.

“I write these words with tears because I am so sad for my dad,” Kimmy Carter Bloemers said.

She said that one of her father’s doctors “will be coming to my parents’ house this evening to talk to the family about the next step.”

Carter has had an especially difficult week.

“Every day is exhausting and every move takes great effort,” Bloemers wrote.