You should talk with a Realtor that knows three things:
Your personal situation, your home, and the local market trends and values.
If you would like I 'd be happy to refer you to an expert in your area that can help you.
Your goal, if you need to sell, is to get top dollar. In truth homes that sell in the first 30 days of market time will sell at closest to asking price, so in most cases a quick sale will be a sale a market value.
Here is an example:
A home went on the market Sunday, it was priced UNDER market, it was a nice home. They had four offers and took it off the market on Thursday. It sold 5% OVER asking...which was market price.
Good luck, do not panic. Knowledge is power, talk with a wise counselor.