Anyone Else Surprised by These Symptoms?

Ok, I need your help. I've found that the most emotionally difficult time since my cancer diagnosis has been since my last day of treatment. There are all of these things that no one tells you about. For example, I'm thirsty ALL of the time - and I'm always freezing cold. But the most startling thing I've noticed is that I've lost that "outer coating" that allows me to deal with stressful situations. Does anyone else feel this way? Is it the chemo, or is it just age?