Origamifan, it is a Nobile type Dendrobium and I urge you to look through all of our threads here within the Orchid forums as many of them address orchid growing. Many address Dendrobium questions.
Dendrobium is one of the largest groups within orchids. Most Dendrobiums like to be underpotted, yours for a single pseudobulb is in much to large of a pot. This type of Dendrobium likes a lot of water, it never likes to dry out completely.
Dendrobiums have very slender roots and should be placed into a fine media with small particle size. Your media has individual pieces that are way to big. Because of that, and the big pot, you'll have trouble getting it the water that it needs.
Yours needs a few hours of morning sun then just bright. Fertilize once a month very weakly.
The signs of stress that you see are all related to the water. It gets stressed by a lack of proper water. A single growth like yours should be in a 3" wide pot, no bigger.
Plus it is going to have a very tough time making it as a single growth. When orchids get divided, most experts recommend a division of at least three bulbs, not one!!
Simply summed up, your plant has a future, but it won't be easy. An experienced grower would be successful with a single division around 50% of the time. I have no idea what your chances are. Depends on your experience.
