I'm sorry you're feeling it today. Triggers are a problem for me too. Sometimes I can get through a few days without feeling shaken up by something, and other times it feels like every time I turn around.
I try to remove myself from the situation if I can. If I'm not able to leave, then I will look around at things that don't trigger me, and name them in my head. Like "there's a table. there's a door, there's the sound of traffic." I find doing this reminds me that I'm in the present, and that I'm not in danger.
I may still feel sadness, so I breathe. I never did yoga, but I imagine I'm breathing like that - slow and deep, letting my mind settle on the present.
Good luck my friend.
I won the moment he hurt me, because he poisoned his soul, and I did not poison mine. I did not hurt anyone. He did. He was the perp. He tried to make me into a victim, but I became a survivor. Yes.