If you have no insureance, go to the ER and deal with the medical bill.
I learned along time ago how to self-treat wounds, but there's two problems with self treatment:
a) you are for the most part assured long-lasting scars (look at my calf pic in the "leg pic" thread for a prime example)
b) there's a pretty good chance someone who's not very well trained will make the injury FAR more worse
Go to the hostpital, ASAP! You might be able to get by on antibiotics if you do it like now.
Oh, and next time....right when you get home after doing something like this, mix 1pt providone iodine with 9 parts distilled water, bring to a boil, let cool for a few mins (must still be HOT, as in discomfort hot, not scalding hot), and using a dropper put this solution into the wound. This will help ward off infection. You still need to hit a doctor though.