So after months of pain, Heavy bleeding and bleeding inbetween periods and after sex, Very bad cramping and shooting pains. I visited Gyno and he said pathologically there is nothing wrong, He said my coil might be aggravating things but he didn't think that was the cause as I have had it in many years without issue. I did have polycystic ovaries on scan but nothing else.
I finally gave in and had my coil removed two months ago and I have not felt one bit of pain since!! My Bleeding has stopped between periods and my cycle is more regular and lighter.
Just thought I would share as this could be an issue and help somebody else.
Only downside now is finding a hormonal alternative that doesn't send me crazy!!