Makes complete sense. Maybe you were upset about this others feelings and them being triggered. Even though you weren't triggered you felt how upset the other was and that caused you to have your own feelings about their feelings. Having feelings about feelings. Sounds confusing, but I think I understand. Is like sometimes I have those intense feelings just under the surface. I can feel them, but they aren't my feelings, but it causes me to have feelings about what I'm feeling.
Have you journaled any of what you remember about yesterday?