I'm like this, too. It's not so much that I feel strongly in between sessions (usually) but that if something comes up I often don't realize it enough to verbalize it till later. Not just with therapy. My ex-T, in our dying days, had a habit of denying the interactions I brought up the following week had happened so I made a huge effort to slow down and be more aware in the moment, experienced some success, and am slowly doing this more. Next I'm to try this with feelings. Just periodically stop and go into myself and ask myself if I'm feeling anything. We'll see.