Skyla! Is this normal?!

Zerenity • Arizonan.• Living life to the fullest.•Nature addict. ❤️ Sister to a Marine 🇺🇸
I got my skyla 2/23. I had some intense bleeding for 2-3 days with some awful cramps to no end. The cramps have subsided, but my lower back pain hasn't gone away. Along with that I'm STILL spotting. :( 
Has anyone had this issue? How long does it take for the spotting to stop?