Hang in there. It is funny, we women really are in tune with our weight. Reading all these posts I realize that I am really NOT alone. In fact, it was the inability to lose weight that finally made me research the IUD as there was just no other possibility. I had been dealing with so many other symptoms and just accepting them, but not being able to lose weight actually freaked me out the most. It is hard when you are NOT enjoying your life and watching every wafer that you eat and still not losing weight. I know it is silly, but I assume that your thyroid is "normal". You mentioned T3, what is your TSH? I would definitely get your hormones checked. The asthma induced by exercise should be the one that you really figure out. Absolutely anything is possible with Mirena. Hormone balance is obviously the key to everything. Take care. Good luck.