I think it's perfectly OK to let your T know that you spend time thinking about your sessions; he or she will appreciate it. Plus, whatever the remark was, it was not insignificant to you, and that in itself is important. I think calling or e-mailing will provide some relief, but only if you don't set yourself up for waiting for a quick reply. T could be busy, out, whatever. But, I don't think s/he would be angry.
What do I know? I'm a rookie at this.