HELP MY CYMBIDIUM'S LEAVES ARE FALLING OFF...

[siannevo]

Hi I am new to the orchid world...and need some assistance to try and save my Cymbidium.

So I was given a Cymbidium as a gift and I love it, it has sooooo many stalks ready to bloom...and it was originally in a small black drainage pot and i allowed it to sit in there and put it in a much bigger pot for show, because i had heard that the roots like to be tight and i shouldnt replant until the flowers stop blooming because it could stress out the plant. Well it was doing great for a week, I watered it only once, and i gave it orchid food (the blue kind) and let it be (it is in a passage way type of area, but its in diffused light and its not a main passageway. This week I noticed some leaves had just fallen off. They are perfectly green, but at the bottom of the leaf where they detached its a little slimy and lighter green. The next day more leaves fell off, and when i would touch a leaf it would just fall off, completely break off (much like a lizards tail clean break) and just an hour ago a baby stalk fell off. Its totally depressing me as there are so many flowers in bloom on it already and i dont want it to die...because its like a little person to me..

So can someone tell me what the problem could be? It has drainage, i havent overwatered it (or at least i havent watered it since i first received it), i dont see any aphids, or insects on the leaves or buds...could it be stress?

Please get back to me, because i think there is still time to save it.

Thank you
Jessica