K.J.
I had a Mirena inserted 6 weeks after my now 2 yo was born. I, too, notice the short temper. I am very sensitive to hormones and told my doctor and also got the "so little is released" speech. I would attribute the temper to having 2 kids, but the intensity and swiftness which it appears seems abnormal to me. I've thought about removing the Mirena to see if it helps, but I had to pay cash out of pocket for it and feel I need to keep it until its time is up! I guess this didn't help much...felt good to complain, though:)