[EmisaurusRex]

You could try another carpet cleaner, with warm water. Make sure you don't rub the stain when you're trying to get it out...that'll most likely just make it worse. Dab at the stain, or if you have a wetvac, try vacuuming it after you put the cleaner on it so that it raises the stain?
I guess if you can't get it out, you could call a professional cleaning service and they might be able to help. If you don't want to go that route, you could always get a small rug to cover it up.

I hope you're able to get it cleaned!