I have a Mirena. It has been so great I am actually scared that when I have it removed next year, my old symptoms will come back. I doubt they will though.
I got one when I was having very horrible perimenopause symptoms. Flooding, couldn’t go out as just bled everywhere, depression, massive anxiety (had to cancel holidays as couldn’t get on the plane, couldn’t get my hair cut). I then had oestrogen gel, and progesterone tablets which the latter just made me feel so low and in a dark place. I think I read on here about the Mirena and I asked for one.
Hey presto, 3 days later I was a new woman. 4 years later I am just amazed at how it settled everything down, and I got my life back. In fact it has been bliss with no periods and other symptoms are minor. I dropped the oestrogen as I kept forgetting it and it made no difference. It was just the Mirena I needed.
I don’t remember the insertion hurting any more than a smear and TBH I can hand on heart tell you if I was you, I’d take paracetamol, and just lie there and tell myself that it might hurt a bit, but it has the potential to make your menopause a walk in the park.
I am pretty sure I have circumnavigated the Menopause. In fact as a menstruating woman, I was a miserable cow, with terrible PMS rage, and I am a much nicer person now.
Good luck