i didn't have a period after the mirena, my breast were sore and my uterus was enlarged. after about a year the dr gave me provera http://www.drugs.com/pdr/provera.html
it took me 4 years to feel like myself again. one day out the week i would be ok. the recovery was a roller coaster ride because i did it without happy pills or pain killers. sitting was a real pain standing was worse laying wasn't so great either.
after mirena i continued to work 40hrs 9-5 by 6pm i'd fall asleep for 2 hrs.