What Twilight Princess said is a good idea.
I had a coil/IUD fitted 15 years ago, it changed my life. At first my period got heavier but it stopped being painful, then it very slowly stopped completely. My moods stopped swinging too, I am generally equable now instead of up and down. I haven't had periods for about 10 years now, hooray!
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That alien woman. On Earth to observe and wonder about homo sapiens.