"It doesn't feel the best at the minute but I'll get a scan tomorrow," the Scot, who has made 46 appearances for Liverpool this season, told the club's website after celebrating the win in front of a euphoric crowd at Anfield.
"They're confident that it's just a nerve or whatever and it can be maybe a couple of days, but we'll wait and see.
"We can't really comment until I get the scan, but I'll be saying my prayers tonight."
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Liverpool host Wolverhampton Wanderers in their final Premier League match of the season on Sunday, needing a win at Anfield and a Manchester City slip-up at Brighton and Hove Albion to take the title.
The five-times European champions will face Ajax Amsterdam or Tottenham Hotspur in the Champions League final in Madrid on June 1.
(Editing by Nick Mulvenney)
