I put him on the flush draw but did the Q hit him? By checking the river I have to call that reasonable bet right?

Party Poker No-Limit Hold'em, $0.5 BB (8 handed)

UTG ($74.85)
UTG+1 ($20.25)
MP1 ($71.5)
MP2 ($49.4)
Hero ($49.5)
Button ($49.25)
SB ($77.7)
BB ($77.78)

Preflop: Hero is CO with , .
1 fold, UTG+1 calls $0.50, 2 folds, Hero calls $0.50, 2 folds, BB checks.

Flop: ($1.75) , , (3 players)
BB checks, UTG+1 bets $1, Hero raises to $3, BB folds, UTG+1 calls $2.

Turn: ($7.75) (2 players)
UTG+1 checks, Hero bets $3, UTG+1 calls $3.

River: ($13.75) (2 players)
UTG+1 bets $8, Hero calls $8.

Final Pot: $29.75

Results in white below:
UTG+1 has Qc Kc (one pair, queens).
Hero has 9c 9s (one pair, nines).
Outcome: UTG+1 wins $29.75.

Unfortunately I was right about the flush draw but that Q did hit him.

How loose was the player? This person limped in from somewhat early position.
I usually make a list of likely hands the other person likely has.

A-Xs is likely, but I don't have info on the player's tightness, I will assume average.

A-7, A-8, A-9, A-T, A-J, K-J, Q-J, K-Q, J-T, K-T, T-9
A-Q, A-K, K-K- Q-Q, J-J. A-K are all unlikely as they did not preflop raise from EP.

Also note: I see the call -> raise next round play

UTG+1 Calls 2$ into a 5.75$ pot. This is about 12 outs needed to justify this call without a raise. Maybe 13 outs.

9 for a flush draw, 6 for overcards. At this point, I would figure this person for suited paint cards.

My new list at the turn:
A-8s, A-Ts, A-Js, K-Js, Q-Js, K-Qs, J-Ts, K-Ts, T-9s, J-9s; I am going to rule out the hands with a T in them due to the lack of a raise on the flop. J-9s is unlikely because this is an open ended straight draw on top of the flush draw warranting a raise on flop as well.

New List:
A-8s, A-Js, K-Js, Q-Js, K-Qs, J-9s

Turn:
Calls 3 Dollars in a 10.75 dollar pot. This is about 10 outs needed to justify a call. I don't think my possible hand list needs modifying here.

River:
Then there is a RAISE!
WEEP WOOP WEEP, look at the previous round, what came down? A Queen, there is no flush threat now, and yet they still bet when a 5 comes down?!?! This is a Mike Caro tell, When a player does a sudden reversal bet on what seems like a rag, this is almost ALWAYS a good hand. Or they landed a set of 5's or 2 pair. Either way, this was not worth the risk of calling. I would have folded here.
A-8s (unlikely as this would be a flush threat bet )
A-Js (unlikely )
K-Js (unlikely )

Remaining list:
Q-Js*, K-Qs*, J-9s ( Quite likely )

You beat none of the likely hands this player might have.