I wasn't allowed to cry when I was little. My father found it offensive or a sign or weakness for some reason. I still don't know why. Anyway, we would get punished or hit if we cried. As an adult I don't cry in front of anyone. It took me a long time to be able to cry in front of T, I still tell him to turn around when I do, even though he never does. When I cry there I only let out a few tears, dn't even need a tissue. I have never blown my nose there or sobbed. I think it's a normal response for those of us who were abused/have trust issues/can't tolerate feelings. Keep talking and it will come with time.
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The patient's job is to repeat in the therapy all the stuff that has been disastrous before. The T's job is to not let it happen, but to point out how it is happening.