should i of called the river bet?

ladd07

Player	Action	Cards	Amount	Pot	Balance
GEMO	Small blind		£0.05	£0.05	£9.52
vee123	Big blind		£0.10	£0.15	£5.52
	Your hole cards	9 9
martoni0	Fold
ladd07	Raise		£0.30	£0.45	£6.70
bluedo01	Fold
j3ono	Fold
GEMO	Call		£0.25	£0.70	£9.27
vee123	Call		£0.20	£0.90	£5.32
Flop
		A 7 9
GEMO	Check
vee123	Check
ladd07	Bet		£0.20	£1.10	£6.50
GEMO	Call		£0.20	£1.30	£9.07
vee123	Call		£0.20	£1.50	£5.12
Turn
		J
GEMO	Check
vee123	Check
ladd07	Bet		£1.13	£2.63	£5.37
GEMO	Call		£1.13	£3.76	£7.94
vee123	Fold
River
		10
GEMO	Bet		£2.82	£6.58	£5.12
ladd07	Call		£2.82	£9.40	£2.55
GEMO	Show	8 A
ladd07	Muck	9 9
GEMO	Win	Straight to the Jack	£8.69		£13.81

Been playing on the table for a while. 5p/10p NLHE and Gemo has been playing quite aggressive, i 3X BB pre-flop to narrow the field. then thought Gemo hit the Ace, as that would be in his range, i bet 3/4ths the pot on the turn and checked to him to bet on the river. As he wasnt Re-Raising me which he has been doing i thought i was still ahead, the bet on the river made me think he had hit 2 pair. There Was a pssible straight out there, should i of folded?

DOHHHHHHH

Why did you bet so small on the flop?

If you bet properly on the flop, your subsequent bet on the turn will be bigger, and you will be committed to the hand on the river.