Skyla 1.5 years Cramping

I got Skyla for birth control but also to help with severe periods and cramping a year and a half ago. Lately my periods have been light and easy almost gone! But I just had my period a few days ago and bled more than I have in months and now that it is over I have had severe cramps for a day and half that haven't gone away and we're so bad they kept waking me up during the night. Anyone experience issues this far into the 3 years with Skyla?