I can understand why you are upset, as once you tell someone something you can't untell them and none of us ever know for sure what someone else is thinking.
Perhaps it would help to consider the evidence rather than anxious thoughts and worry. And the evidence shows ...
You did nothing wrong. You unfortunately had a very traumatic childhood and that is not your fault.
You have nothing to be ashamed of. In fact, you should be proud to have survived and be now getting on top of your mental health issues.
The person you disclosed to provided you with support. The response was helpful and non-judgemental.
Anyone with a heart and a pulse would feel nothing but compassion for you. Anyone who didn't isn't worth worrying about.
I know it can be scary to open up and show vulnerability to other people but I really think--based on the evidence--that it's okay.
Kind thoughts to you