Skyla Weight gain and other symptoms?

So, I had my Skyla IUD inserted a couple months ago, and immediately noticed bloat and increased appetite.. I'm 22, pretty healthy, but I've gained almost 15lbs and I've also been moody, irritable, and had extremely low libido. I feel like I'm becoming difficult to be around and I don't know if it's me or a side effect of the Skyla. What are your experiences with this IUD?