I have had a cyst on my tailbone for several years. It was small, never really caused me pain, and could be mostly ignored. For some reason I'm prone to cysts- I have 3 on my arms, 2 back, 1 chest- so a cyst on my tailbone was not a shock. About 3 months ago, it started swelling and went from dime sized to bigger than a golf ball- probably nearly baseball. The pain wasn't as bad as it looked so I started trying castor oil packs, which opened a sinus. About 10 days ago, POP! The first few days were pretty easy. There was a lot of pus but only when I tried to get it out. Now I'm getting to the old stuff that has been there for years. It's gross, it stinks, and it's abundant. I feel like I'm on the last few days of getting the infection out. My question is (finally there) what should I expect for the future? I know I'm likely stuck with a bump for life without surgery, but if I get this infected garbage out of me, will it go back to being a closed cyst? Will the hole stay and leak forever without surgery? I want to go back to the days when this thing was nothing more than a tiny annoyance. Is that possible without surgery once it has formed a sinus?