He will not play at Portsmouth on Saturday, and is almost certainly out of England's friendly next Wednesday against Spain in Seville.
Boss Rafael Benitez said: "Steven Gerrard will have a scan tomorrow to see the extent of the injury, we do not really know yet.
"Steven was tired, and he gets injured. He was tired, too, at Wigan but when I took him off there everyone was saying he had to play every single minute of every match. Now you have seen the consequences.
"He asked to be taken off, you could see at Wigan he was struggling and the same thing happened here."