Lionel Messi said he has “serious doubts” about continuing to play soccer for “much longer” after the death of his father, Jorge, in an emotional tribute posted on social media on Wednesday.

“I don’t know what I’ll do without you, I don’t know how to go on,” the 39-year-old Messi wrote.?“I just played football, and now I have serious doubts about continuing to do so for much longer.”

Messi’s father, who was also his agent, died last week at age 68.