It's 3 years and 5 months for me. It doesn't impact too much on my everyday living any more, but I can be triggered. A few months ago I was triggered into a panic attack when I heard a therapist describe acting towards their client in a way similar to how my first therapist acted towards me.
I think it does get better, but not overnight. What you went through was both traumatising and retraumatising. Trauma isn't an easy thing to recover from. And it isn't just 3 years ago, it's less than that when all of this was dragged up in a complaint. So try to be patient with yourself. You are doing really well.