Good points on communicating fully with your T

don't stuff stuff

Air it out in the session...and find out that maybe your fears were unfounded. How great a feeling sunrise!
Remember, it's up to the T to do good self care. If what you are doing is going to overwhelm or burden T, it's their responsibility to tell you and help you find another way to work through things. It isn't good for you to worry about your T in this manner (though I know everyone does it a bit at first)... that's part of why it's good to have a licensed psychologist, for then you know their training has included how to keep themselves from burning out.
You work on taking care of you, and the T does too!