How to make a bruise go away quick!!

So recently I dropped a heavy textbook under my eye while trying to put it to storage and it fell and left a HUGE bruise this happened 3 days ago! I am going back to school in 3 days what's the quickest way to make it less noticeable! It was worse before but it's still very noticeable and people just stare and it makes me have social anixety pls help I've already tried.makeup