A7s, enormous pot

can i get away from this hand? should i? on the river i thought i probably didn't have the best hand, but the pot was big enough where i figured i had to go to showdown anyway. preflop the table was loose enough where i thought my hand would get the proper odds. on the flop i thought i had the best hand enough of the time to continue. most of the table is extremely loose, take that into account.

Party Poker 0.50/1 Hold'em (6 max, 6 handed) FTR converter on zerodivide.cx

Preflop: Hero is CO with 7[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. Hero posts a blind of $0.50.
UTG calls, <font color="#CC3333">MP raises</font>, Hero (poster) calls, <font color="#CC3333">Button 3-bets</font>, <font color="#666666">1 fold</font>, BB calls, UTG calls, <font color="#CC3333">MP caps</font>, Hero calls, Button calls, BB calls, UTG calls.

Flop: (20.50 SB) 2[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, <font color="#CC3333">MP raises</font>, Hero calls, <font color="#CC3333">Button 3-bets</font>, BB folds, UTG calls, <font color="#CC3333">MP caps</font>, Hero calls, Button calls, UTG calls.

Turn: (18.25 BB) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
UTG checks, <font color="#CC3333">MP bets</font>, Hero calls, <font color="#CC3333">Button raises</font>, UTG folds, <font color="#CC3333">MP 3-bets</font>, Hero calls, <font color="#CC3333">Button caps</font>, MP calls, Hero calls.

River: (30.25 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">MP bets</font>, Hero calls, <font color="#CC3333">Button raises</font>, MP calls, Hero calls.

Final Pot: 36.25 BB