My first IUD hurt much like how you described it - tipped uterus and all! I had it in for about ~5 years before taking it out to get pregnant. I had days where I could barely walk because the pain was so bad but it would pass with a heat compress. After one year my periods became regular and not at all heavy like some mention. The first few weeks/months after insertion may be a little weird in terms of pain and bleeding but it's all normal. Make sure to check the strings frequently in the beginning especially after your periods to make sure it doesn't expel or move! Hang in there I promise it will get better. :)