I can tell you this until I'm blue in the face, but this part is up to you. I can tell you that if you don't do it now you will someday not ever be able to run. It's your choice. Also, go to your local healthfood store and pick up some Arnica gel or cream. It will be little white pills that you put under your tongue.
Apples are another natural anti-inflammatory as well as ginger root.
Anyhow, the most beneficial thing you can do is stop running. Aslo, you should do self massage, or get someone to massage your achilles. Do a cross friction type of massage. During your layoff do not stretch at all or only stretch to a point where it does NOT hurt. I mean you shouldn't even feel a twinge.