Irish moss is used as a clarifying agent. While I have had decent success with irish moss, as others have commented, there are other ways to help clarify your brew. Ferment a little longer (3-4 weeks), use gelatin, chill quickly (after fermentation is complete of course), or filter (not usually an easy option for most). Irish moss as well as these other options shouldn't change the flavor of your beer noticably so the method is up to you.
Bottom line, you have no problems. Have some patience with fermentation then chill quickly and give it a few more days and if you are able to use gelatin before chilling. You should have a wonderfully clear beer.
Good luck!