Problems with Q,Q on Turn against nothing but action...

I am beginner, this is my second posting:

I played Q,Q against three opponents on turn. i cannot say anything about my contrahents, because I just started playing 5 minutes before this pot.

On turn I thought I had the best hand.But then came some action and i simply did not know, what to do... If I believe, that my hand is best, I have to raise. If I believe in the action of my opponents , I have to fold.

So I called, but have no idea, if this was OK...

Can someone tell me?

Party Poker 2/4 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is Button with Q[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">1 fold</font>, MP1 calls, MP2 calls, MP3 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, UTG+1 calls, MP1 calls, MP2 calls, MP3 calls.

Flop: (11.50 SB) 6[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
UTG+1 checks, MP1 checks, MP2 checks, MP3 checks, <font color="#CC3333">Hero bets</font>, UTG+1 folds, MP1 calls, MP2 calls, MP3 calls.

Turn: (7.75 BB) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
MP1 checks, MP2 checks, MP3 checks, <font color="#CC3333">Hero bets</font>, MP1 calls, <font color="#CC3333">MP2 raises</font>, MP3 calls, Hero calls, MP1 calls.

River: (15.75 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
MP1 checks, MP2 checks, MP3 checks, Hero checks.

Final Pot: 15.75 BB