Blackburn have said he can stay unless there are any injury problems and they need to recall him. He's scored 7 goals for Argyle this season.
He picked up an injury in last Friday's win over Southampton and is due for a scan this week. Hopefuly it'll be sorted soon.
Paul Sturrock told the club's official website: "I've spoken to Sam and unless they have injuries or someone comes in with a fantastic offer he's staying with us for the season."