low striaght

[youdnf]

3-6 UB game. The game is pretty passive, and not much rasing going on preflop. I really dont know why i called this hand preflop, i thought it was suited and i had dealer, turned out i had niether, but it post flop which is important.(I just woke up wasnt really paying attention,little bad)

I have 9c 8h
Preflop Utg calls,Utg +1 folds Utg+2 calls,Mp1 folds, Mp2 calls, Mp3 folds, I call, dealer folds, SB folds, BB checks.

flop come Qd Td Jc

BB bets, UTG raises, UTG+2 raise, folds to me and i call, BB calls, Utg calls.

1st quetion, what should i do here, should i put someone on A K and fold or K 9, or should i call. Also if someone has a K with another diamond am i a underdog?

The turn comes a Ac
BB bets out, UTG calls, Utg+2 folds, what should my action be for the turn and river.