I think so. I've heard or read about EMDR bringing up intense emotions a few days or later after the session. I usually feel relaxed and tired afterwards, though often I get stirred up but not to the extent you're talking about. Maybe because I'm not processing severe trauma, but places where I'm "stuck" in my past. EMDR is supposed to be a quick "exposure therapy" so it makes sense that it makes you feel things intensely! It's weird but I know it does something good for me and I hope it helps you too.