I do the same thing....I'm fine. Then my T. gives me a look like "yeah right". And then I go into more detail. I used to say what I've been up to but now with 50 min not feeling like enough time, I dive right in.
I have lied once but then in the next session "corrected" my lie by saying I had thought about her question more. I don't really lie now - just talk all around the question and not REALLY answering the question. She knows and has said that I don't trust her, only give her half the story/feeling, am guarded, change the subject, etc. Some of this I didn't even realize I was doing.