Just fold pre-flop. A567s is worth playing in position, not out of the small blind, let alone with the raising that you saw pre-flop. However, since you're in the pot, you have middle pair and an OESD to the nuts. There is no way you have the best hand at the time. There is obviously an overpair out there and maybe even a set of 9's. You're getting about 3:1 on your call, but you also might be dominated by a wrap draw with backdoor flush possiblities, so I would just drop it on the flop. You needed to hit the flop hard, with trips or a wrap straight/flush draw to proceed. Just fold and stop playing mediocre hands out of position.

I also agree with the first respondant. If you're going to call here, you should've put in the $$ yourself for the fold equity. And brother, you need all the equity you can get with this hand.