$11 BB flop weak open-ender, now what?

[hoppp]

What is the correct postflop play ?

Holdem NL £5+£0.50 - LEVEL2 (15/30)

BUTTON (734 in chips)
SB (1368 in chips)
HERO (978 in chips)
UTG (832 in chips)
UTG+1 (933 in chips)
MP1 (955 in chips)
MP2 (1855 in chips)
MP3 (975 in chips)
CO (1370 in chips)

SB posts small blind 15
HERO posts big blind 30

----- HOLE CARDS -----
dealt to HERO 5 [img]/images/graemlins/club.gif[/img] 2 [img]/images/graemlins/heart.gif[/img]
UTG calls 30
UTG+1 calls 30
MP2 calls 30
SB calls 15
HERO checks

----- FLOP ----- 4 [img]/images/graemlins/heart.gif[/img] 3 [img]/images/graemlins/spade.gif[/img] Q [img]/images/graemlins/spade.gif[/img]
SB checks
HERO?