Heather,

could you by any chance be depressed?

I have noticed that people pick up on very subtle signals of depression, most likely without being aware of what they are picking up on. And, many people would turn you down when you are depressed - not everybody has enough compassion to actively engage with a depressed individual.

Pretending that you weren't depressed when are is virtually impossible, because it is sort of written on your face. The only way out is treating the depression. Many people are very perceptive, without consciously realizing what it is they are reacting to.