My macbook pro retina 13" is having some issues, it says that my capacity is full and that i have over 2 TB of videos, etc, on it. I can`t find anything on my mac thats heavier than 3GB.
You need to wait for the reindex to complete. Click on the Spotlight icon in the menu bar and you will see a blue swirly bar showing the reindex is still in progress. It can take 30 minutes to an hour or so if you have a lot of data.