99 folds the flop w/ no overs?

[PSW]

Party Poker 2/4 Hold'em (10 handed) converter

I am pretty new to the table so no real reads. Table does seem to fit the "good game" image... moderatly loose and not full of TAGs.

Preflop: Hero is BB with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, UTG+2 calls, MP1 calls, <font color="#CC3333">MP2 raises</font>, MP3 calls, <font color="#666666">1 fold</font>, Button calls, <font color="#666666">1 fold</font>, Hero calls, <font color="#CC3333">UTG+2 3-bets</font>, <font color="#CC3333">MP1 caps</font>, MP2 calls, MP3 calls, Button calls, Hero calls, UTG+2 calls.

Flop: (24.50 SB) 8[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">Hero bets</font>, UTG+2 calls $0.75 (All-In), MP1 calls, <font color="#CC3333">MP2 raises</font>, MP3 calls, <font color="#CC3333">Button 3-bets</font>, Hero folds?

Sure, MP2 may be raising with his overs that he raised w/ PF, but the button is coming over the top. What hand(s) do you put them on and was I right to folds?

Thanks