Not able to heal

I am on my warlock, have been trying to heal past 12%, if I go to use a healthstone it says that I cannot heal at full health. I was just doing a N’zoth event in Uldum, not sure what triggered the bug, and the event i was doing has a purple swirling aura that you have to walk into and there is a ton of mobs inside and you have to click the stone in the middle to finish. I am out of combat now and my health is staying at 12%. I tried “/reload” and nothing changed. will log out and log back in. just sucks