Swollen jaw due to tooth abscess?

Bottom left side of my jaw has swelled up due to a tooth abscess. Been this way for about 4 days now. I have been mixing it up with a hot & cold pack and swishing with a salt water mix and so far not having any improvement. I have barely slept since it swelled up. I got laid off from my job not long ago because it was slow so I no longer have insurance to go to a dentist and don't have the money to pay out of pocket. Any suggestion on what I can do? Thank you