I get triggers a lot. It can be a song, a memory, or some person that looks like someone who has aboused me. I try to take deep breaths, and focus on something else.

Trigger "swarms" are normal. Until that first one, things have been so burried, nothing would release them. Once the "ice is broken," so to speak, then it is common for your the have trigger encounters in multiples.

The "trigger response" is the kicking in of the "fight or flight" response, which is vital for our very survival, only it is intended for those things which are life threatening. Repressed memories is a supression of this response, until something triggers it to the surface. Once there, it can be triggered by other things because those other repressed memories are also surfacing.

Once the flood gates are opened, it's normal to be bombarded by triggers. I take very deep breathes and count to ten. Sometimes it helps. Then when I'm more relaxed, I write it all out. Then burn it. It's my way of dealing with them.