A home remedy you could safely try is to hold a hot, damp compress against it for 15 minutes (continue to keep the cloth
hot by refreshing it in
hot water), and then see if the
cyst has opened and drained.
If you can't refrain from squeezing it or working on it with your fingernails in some other way, do see a dermatologist, since fingernails and pushing the pus down into the pore are ways to give yourself an infection.