The central defender limped out of the second half at Roots Hall with a groin problem and will definitely miss Tuesday's visit of lowly Hereford.
Boss Greg Abbott told the club's official website: "Murph will see a surgeon and we'll get an idea from that as to what we're dealing with.
"At the moment I expect that he'll miss Tuesday night's game but we'll wait to see the extent of the injury before we make any decision for the Northampton game at the weekend."
Source: Team_Talk