Unfortunately, your home is only worth what a buyer is willing to pay not what you "need". You don't mention why you need to sell, Have you lost your job? Are you relocating? Consider contacting the original listing agent and inquire if there were other buyers who also wanted to purchase the house but "lost out" to your successful offer. If they haven't already purchased a home they may still be interested in purchasing your home.
Have you considered renting your home? If you must stay there yourself, have you considered taking in a room mate to help with your expenses? This will at least help with some of your expenses while you sort out your next move.
Casa Bella Realtors