Keeping the wisdom tooth? what happens?

So I went to the dentist today, and I have to get my wisdom tooth extracted, I have a infection and its very painful and he prescribed me some antibiotics, then he referred me to a specialist. But I don't have money and no insurance. What happens if i keep them in for a while till I save money to get dental work done in Mexico. My husband cousin is a dentist, and Im planning on researching a bit more, to get all my wisdom teeth extracted over there.. Will the pain go away eventually? Can I keep them in..I just dont know what to do.