For some reason, it looks like the fermentation stalled. 1.018 FG sounds too high. I'm guessing all/most of your bottles will be gushers. In fact, I'd keep them all in some kind of tupperware container in case you have one explode. That'll keep from making a mess wherever you store them if you do have one blow up. They'll all be fine to drink, though. Just a little over-carbed.