My bf triggered me

My boyfriend and I were talking and he told me something that happened that was deeply triggering for me. I immediately started shaking and crying and having anxiety about it and I told him. He started getting upset with me, saying he should have never told me the story. He thought that I was upset with him. He knows I have ptsd but still got angry with me. I tried to tell him that I wasn't mad or anything but that I was triggered. He said he was stressed out and wanted to take a shower. I feel so fucking shitty and don't know what to do.