I have exactly the same thing, I've had it in since February and they've told me I'm just "one of the unlucky ones" that is likely to bleed for a year before it stops 😬
Not ok, have it checked / removed, and replaced if you like. But have it done soon as I’ve seen several babies born holding it in their hand.
Absolutely not! My friend had this and it turns out it wasn’t sitting in the right place, get it checked when you can! Honestly don’t bother with the GP, I went to a sexual health clinic and they were great doing mine too 😊 I had the Mirena and loved it for years, so there is hope! Xx