I got a Skyla IUD inserted 3 weeks ago. From the first night, I had a sudden stabbing feeling that lasted ten or fifteen minutes, though it wasn't severe and happened only a few times a day. I still get intermittent stabbing pain, though never very bad, and it happens more often at night. If I press on it, it doesn't feel sensitive or hurt any worse. A few days ago I had a clear mucus discharge with some blood in it, but only once. The pain may be getting slightly worse at night. Could this be a perforation?