Yes Maggie that happened to me last month. I had gone 15 days without a full-blown attack, and then after a very upsetting conversation with my sister by phone they started again! I was so angry and depressed, at her for upsetting me and myself for letting her do that too me, thankfully after about a week it calmed back down, and yes it scared the heck out of me, I thought "there back" but even through I came close, so far so good, but I still have very very high anxiety, health anxiety, and some depression. I just wrote a post about body symptoms and everyone gave me such good solid advice. I hope both of us can deal with this, I am sure we will.