Wisdom tooth might be infected, can't afford a dentist

I've already had 4 wisdom teeth out but I've now got two again. The top one has grown at an angle. The bottom one has half grown and at an angle and has a flap of gum over it. My jaw is really sore and I can't open it properly or chew. I've had flu like symptoms and ear pain. I've been ignoring the pain for probably a month or longer but it's gotten really bad now. I can't eat on the otherside of my mouth as I have a hole in my tooth which hurts when I eat and I don't want that to get infected. Is there anything i can do without going to the dentist as it's expensive and the NHS doesn't cover dental expenses. Painkillers haven't been working either