"It wasn't like I injured anything," Williams said, according to the Texans' official website. "I just stopped because I felt something, and obviously we wanted to be sure, and we got an MRI. But I'll be all right."
Williams added that he expects to play against the Giants, but he admitted the decision is up to Kubiak, who said "everything was fine" on the MRI and that he'll decide the player's availability closer to game time.
"I'm not worried ...," Williams said. "It feels like a little boo-boo. I've kind of just got to play with it."
Wide receiver Jacoby Jones, Houston's top punt returner, is doubtful for Sunday's game. Jones sat out practice all week with a calf injury.
The Associated Press contributed to this report.