I've have the Mirena in for about 4 months now. I'm not sure if ...

I don't know what age you are but I've read that Mirena can bring on an early menopause which may explain the hot flashes? I also had feelings of anxiety and heart palpitations with Mirena that went on for a week after removal

I had the Mirena inserted when I was 33 (I'm 35 now) and put up with it for 9 months. I started having hot flashes a few weeks after my Mirena was in place. I'd guess it was 3 to 4 times a week. The hot flashes were so bad, that even in the winter, I would have to turn on the window A/C unit and stand in front of it or go outside in 30 degree weather to feel a little better. 3 months in, I had my first anxiety attack ever. I thought I was losing my mind. I was literally running through my house, trying to get that panic feeling to go away, which to this day makes me cry just thinking about it. I'm almost 7 months post-removal and haven't had a hot flash or anxiety attack in almost 4 months. My main side effect from Mirena was a dizzy-passing out kind of feeling that still lingers around my period. I would advise having it removed ASAP. Good luck and I hope you feel better real soon.

I also have been having very bad hot flashes and night sweats , also very bad anxiety. My son is 10 months old. I am seriuosly ready to get this taken out, it's just not worth it.

I had hot flashes, which continued after removal. The Mirena put me into early menopause. I was just 43 and went from thinking (and my Dr thinking) that I needed birth control to post-menopause in a matter of 5 months. I also had anxiety for the first time while I had the Mirena. It has gradually subsided to where it is now very, very infrequent, thankfully. I am 9 months post-removal.