Bleeding with Skyla

Meghan • 19, future nurse, living day to day as best I can
Hi all!
I have had Skyla for a little over a year, and have - for the most part - liked it. It's definitely nice not having to worry about taking pills every day. For a few months straight my period completely went away, with the exception of a few days where I would spot. But lately I have been bleeding more than normal, and it's completely irritating not knowing when I'm gonna start or how long it'll last. 
Has anyone else experienced this?