Schaub, who has started every game for the Texans since an offseason trade with Atlanta, said his health has improved dramatically since Sunday.

"It's feeling better, clearing up a little bit," he said. "Headaches are subsiding, so we'll take it day to day."

Schaub was injured when he was blindsided by Drayton Florence after throwing his second interception in Houston's loss to the Chargers. It was the second straight week he'd been knocked out of the game by a helmet-to-helmet blow. He injured his hip on the first one.

He said this was his first concussion. Schaub sat on the sideline rubbing his temples for several minutes before he was taken to the locker room.

"It was hurting. I had headaches," he said. "I was a little out of it and not really with it and really cloudy and foggy in my head. It was a weird feeling not ever experiencing anything like that prior."