Watkins did not participate in practice on Thursday or Friday after injuring his groin during the team's practice on Wednesday.
His comments Friday were his first since he was injured, and he revealed that the injury had been bothering him for two weeks.
Watkins is listed as questionable for the Buffalo's home matchup against Kansas City, but said he didn't know whether he would take the field, despite undergoing an MRI during the week.
"That's the coach's decision about whether I should play. It's a long season so I'm really clueless right now. I don't know," Watkins said. "They didn't update me or really tell me what's going on."
Sammy Watkins not saying much. Said he underwent MRI but doesn't know results. Calls it a nagging injury.— Mike Rodak (@mikerodak) November 7, 2014
Buffalo coach Doug Marrone said there were no plans to try Watkins during practice on Saturday.
"No, I don't think it is [the plan] until the trainers tell me he can go," said Marrone. "The guy can't practice."
Watkins, 21, has 38 receptions for 590 yards and five touchdowns through eight games.
The Bills, currently 5-3 and second in the AFC East, host the Chiefs, who are also 5-3 and second in the AFC West, on Sunday at 1 pm EST.
- Christopher Woody