WORST CRAMPS OF MY WHOLE LIFE

Madison
I've had skyla for about six months and I was told the cramps would go away by then. They have for the most part but for the past week or so holy shit. I've had some of the worst cramps ever. They don't feel like normal cramps, they're actually sharp and painful. Any ideas what I should do? It hurts so much.
In addition my boyfriend said the strings feel like they're getting shorter.