1) 8 players, late position, (pocket 5's)
I call the blind, 4 other players call.
flop (2h, 7s, Js), everyone checks
turn (5s) and second player raises big.
I suspect a flush and folds with the others.
Was this too chicken

2) 6 players (Jc 9h) on big blind
call around the table
flop (J 9 Q)
I place a big bet, one oponent calls
turn (K) (no flush)
I check, he raises big time and I fold.
Did I do anything wrong here at any point