You can get the pus out yourself without too much trouble and it will be over. Do a lot of hot baths, and gently massage it. Then when you think it is "ripe" squeeze it. It will be very painful but will not have lasting effects. It may take several times to get everything out. When everything is out, give it a lot of air to heal properly. An application of Colloidal Silver for ten minutes (wet cotton ball) will finish the haling.
Use of salt water is good, applications of warm wet cloths, gentle massage to soften up the inside of the lump and hot baths are all positive.
If you go to the doctor, he will open and squeeze it for you - same pain, more money.