JJ turning in mid pair

[lexudin]

Table is somewhat tight, people dont seem to be cold calling with garbage.

Villain is 27.9/11.5/0.8 over 60 hands

Party Poker 0.15/0.30 Hold'em (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is MP2 with J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, Button calls, <font color="#666666">2 folds</font>, UTG calls.

Flop: (7.46 SB) Q[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, Button calls, UTG folds.

Going for continuation bet...

Turn: (4.73 BB) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

Not liking turn at all, and since would probably call b/r, i decide just to call down and c/c. ( am i playing too scared?)

River: (4.73 BB) Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero ???

So villain checks behind me.Hate giving free card, but im thinking, now if i bet on river, he would probably call or raise if he has me beaten (atleast Ax, Qx...), but will probably fold if the board missed him. Or am i just being chicken again?, and giving villain too much credit?

What would be standard correct way to play both turn and river in such situation?