Well, I looked at the pseudobulb and it's the only leaf coming out of it... I am wondering if it is some kind of fungal infection? I have never seen one and am probably getting paranoid but I don't know what else could cause it... unless I gave it too much water.

I did look at the roots when I repotted. None of them were brown and squishy. They were mostly firm and light colored, like you said. The pot does have drainage holes at the bottom.

I haven't fertilized the plant... I gave it this orchid food mix I bought at the store almost a month ago. Do you think that could be the issue?

Thanks a lot for the help!