TPGK sandwiched between fish and reg NL50

BTN was a 49/33 over 44 hands. He made kinda strange opening bet sizes. I had seen him call down every street with MP twice. Seems like a good guy to be able to Valur town with a TP type hand.
BB was 23/18 over a large sample no real specific reads.
I was prob running 19/16 or something similar.
No-Limit Hold'em, $0.50 BB (5 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

Button ($50.60)
Hero (SB) ($50)
BB ($50.75)
UTG ($50)
MP ($50)

Preflop: Hero is SB with Jhttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, Ahttp://www.flopturnriver.com/phpBB2/...iles/spade.gif
2 folds, Button bets $3, Hero calls $2.75, BB calls $2.50

Flop: ($9) Ahttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, 9http://www.flopturnriver.com/phpBB2/...es/diamond.gif, 4http://www.flopturnriver.com/phpBB2/...iles/heart.gif (3 players)
Hero bets $7.50, BB calls $7.50, 1 fold

Turn: ($24) Khttp://www.flopturnriver.com/phpBB2/...iles/heart.gif (2 players)
Hero checks, BB bets $17, Hero folds

Total pot: $24

Results below:
BB didn't show
Outcome: BB won $39.85

I was thinking that there was not to many weaker Aces he would call me down with. I think we can assume he 3 bets AK. Not sure about AQ. Obviously 99 is possible and maybe 44.I guess there are a lot of FD in his range considering the fish tat was in the hand. I wasn't sure about the turn because I figured a near pot bet pretty much commits us on the river. I kinda gave the initiative away by checking the turn and prob widened his range. Maybe be better to 3 bet pre against a fish that we can widen our 3 bet value range?
Am I a total nit?