Period cramps - coil?

[Fuckenstein]

The last few months I have been having really painful periods. Plus lots of random pains and spotting. All very unusual for me.

I have had swabs, blood tests and a scan, all they found was a small cyst on my ovary. My coil is where it should be.

Could my coil be the cause of the pain? I have had it in for more than 7 years but the pains are recent.

I don't know what else it could be.