I like this post because I am just 5 days post Mirena and think I am crashing. I've felt great the last 4 days and this morning I had a panic/anxiety attack. My heart was racing again and I felt like a freight train was coming thru my chest. Does this sound like a crash? Anyway, I too was wondering while all of this was going on, how long 'til I start feeling better. I am glad to hear that we will start feeling better because of what some of you are writing, so thanks for keeping us posted.