Soaking in a few inches of warm water — either in a tub or sitz bath — four times a day for a few days may resolve even an infected Bartholin cyst. Taking over-the-counter painkillers, such as naproxen (Aleve, Naprosyn), acetaminophen (Tylenol), or ibuprofen (Advil, Motrin), may help with discomfort.
Warm compress and gently squeeze afterward, warm bath and the same. Usually its just a clogged duct and doesn't need surgical intervention. I actually had one and the warm compress for about 5 minutes and gently squeezing resolved it within a day or two.