Should this be a routine fold?

50NL

New to table

Hero is UTG+1 ($50) with
Villain is SB and covers

Pre-Flop

UTG limps .50
Hero raises to $2.50
SB calls $2.50
UTG folds

Flop (2 Players, Pot = $6)


SB bets .50
Hero raises to $7
SB raises to $13.50
Hero ?