A3 Suited on Botton...Opinions needed

[CPA]

Party...I don't have many reads on the players, but table seems typical.

I get A [img]/images/graemlins/diamond.gif[/img] 3 [img]/images/graemlins/diamond.gif[/img] on the button.

Pre Flop: UTG calls, MP2 calls, I call, SB and BB complete.

Flop: T [img]/images/graemlins/heart.gif[/img] Q [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/spade.gif[/img]

UTG checks, MP 2 bets, I raise (?), SB, BB, UTG fold, and MP2 calls.

Turn: 7 [img]/images/graemlins/diamond.gif[/img]

MP2 checks, I take my free card

River: 3 [img]/images/graemlins/heart.gif[/img]

I bet, MP calls (TJo) and MHIG

Is the raise on the flop typical? I usually fold in this situation, especially with no back door flush opportunity (and MP could be on straigt draw)? If MP2 would have raised the Flop, I would have folded.

Thanks in advance for your thoughts. This type of hand comes up often and would like to know if raising the flop is a better play.