Hi, I had the mirena fitted in 2007 aged 45, although this was for contraceptive purposes as I was still pre menopausal. My periods stopped completely and I had no side effects at all- it was great.
I went to the GP in 2010 as I could no longer feel the threads and was worried that it had fallen out .....my GP spent ages trying to find it and it had lodged itself up into my insides somewhere ! It was touch and go whether I would have to have a GA to remove it but fortunately she managed to locate it and remove it completely. Following removal my periods never returned so I have no idea if and when I went in to menopause...... I also have a large ovarian cyst that I am currently under gynea for and Ive been reading that the mirena can cause both early menopause and ovarian cysts .... I don't know how much truth there is in this though, it could just be a co-incidence! I have no idea how it would affect your womb lining though - Im sure someone else will be along to advise.
Debs xx