Unfortunately, I am pretty much the same as you. Except that my flare ups always occur during the summer months..between July and September. Without fail, I always have horrible flare ups during these months. While I've not been hospitalized in several years, I am flat on my back for 1-2 weeks.
I'm sorry that you are going through this again. I do hope that you start to feel better very soon.
Peace and Blessings