The river was the worst possible card in the deck for you, by far, but you were a big favorite going to to the turn and river:
Turn:
http://twodimes.net/h/?z=1214537
pokenum -o qc qd 6d 8c - ah 4h 8s 9c - kh jh ad 2s -- qh js 5h
Omaha Hi: 666 enumerated boards containing Js Qh 5h
cards win %win lose %lose tie %tie EV
Qc 8c Qd 6d 404 60.66 262 39.34 0 0.00 0.607
8s 9c Ah 4h 184 27.63 482 72.37 0 0.00 0.276
2s Ad Kh Jh 78 11.71 588 88.29 0 0.00 0.117
River: http://twodimes.net/h/?z=1214539
pokenum -o qc qd 6d 8c - ah 4h 8s 9c - kh jh ad 2s -- qh js 5h 7c
Omaha Hi: 36 enumerated boards containing Js 7c Qh 5h
cards win %win lose %lose tie %tie EV
Qc 8c Qd 6d 25 69.44 11 30.56 0 0.00 0.694
8s 9c Ah 4h 8 22.22 28 77.78 0 0.00 0.222
2s Ad Kh Jh 3 8.33 33 91.67 0 0.00 0.083