This is probably too late but may help others. Take a spoon (metal) put it in the freezer for awhile. Take it out and press the convex side directly on the hickey until the spoon isn't cold anymore. This WILL help the recovery time and get some of the redness out. Applying visine also helps (true). You can continue to do the spoon thing a couple of times if you like, it's most effective if done upon receipt of said hickey.