iCloud drive hug problem

I have enabled iCloud drive a couple of weeks back and finally upgraded to the 200gb tier option. I decided to store my photos on iCloud drive by dragging my photo folder into he iCloud drive folder on yosemite. It was barely 7gb and I'm sure it got uploaded fully.

The problem is that I can see that my max is constantly uploading data and hasn't stopped since. This has been happening continuously for 3 days now!. Another thing is that my hard drive space usage went from 64gb to 83gb with no explanation!

Thanks for any suggestions. Cheers