Busted flush leaves 2-pair

[Mucker]

I have been playing more aggressively for ~1000 hands but worry that I'm going too far with it.

Would check/called on the river have been better after the 3-bet? Check/fold? Should the the two pair A+7 be considered a made hand?

BB: 66/0.6/0.5
MP1: no read

PokerStars 0.05/0.10 Hold'em (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is UTG+1 with 7[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, Hero calls, <font color="#CC3333">MP1 raises</font>, <font color="#666666">5 folds</font>, BB calls, Hero calls.

Flop: (6.40 SB) 7[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP1 raises</font>, BB calls, Hero calls.

Turn: (6.20 BB) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero checks, <font color="#CC3333">MP1 bets</font>, BB calls, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">MP1 3-bets</font>, BB calls, Hero calls.

River: (15.20 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP1 raises</font>, BB folds, Hero calls.

Final Pot: 19.20 BB