pot odds question

[TheCount212]

Let's say I have 8 [img]/images/graemlins/club.gif[/img]7 [img]/images/graemlins/club.gif[/img] and limp, with a total of five to the flop. The flop comes 4 [img]/images/graemlins/club.gif[/img]5 [img]/images/graemlins/heart.gif[/img]Q [img]/images/graemlins/diamond.gif[/img]. So I have a gutshot and a backdoor flush draw, giving me 13 outs. If there are no raises in front of me, is it always right to call?