I had edema that was inconsistent. Somedays I woke up fine (after having my legs up above my heart all night). Other days I woke up completely swollen (same sleeping position). It never made sense.
I also experienced swelling of my hands and face.
When I got the mirena removed it was the first thing to go away. I have had it 3 times since removal 5 months ago, but it has always been PMS. I take Evening Primrose Oil--it's supposed to help with this.
I wish you the best. Post and let know how recovery is for you.