Cattleya is unhappy

[SakuraDrops]

Hello all,
I won this cattleya in a raffle at my OS. When I first got it, the leaves were all green, and slightly limp. I have not repotted it or moved it at all in its original container. Since then, a couple of the leaves have turned yellow, one has fallen off today. Now I am really concerned about these spots forming on one of the leaves.

Please see pictures here: Anxious cattleya - Album on Imgur

Care:
Outdoors, under 95% shade cloth
Temperatures vary 85-95F, fans blowing on leaves
60% humidity
I water every other day, and it has been raining once a week since I got it. I haven't fertilized it yet, because I fertilize all my cattleyas on the first of each month.

Any help is appreciated, thank you.