BASED ON bump locations involved, you may have swollen glands Bartholin (Bartholin cyst) which can be ascertained by medical examination.
If true, this bump will usually grows with the frequency of your sexual experience. Bartholin cyst formed by obstruction of the exit channel.
Continuous sexual stimulation will increase the production of lubricating fluid, but due to its channels are blocked, this fluid can not exit. If they have an infection, fluid in it turns into pus that may cause pain, fever or rupture and produce nanahnya content.
See a doctor for examination. Bartholin cyst require surgery to develop new routes to replace the clogged channels. If it turns to the Bartholin's abscess, surgery should be done immediately. This surgical procedure called "marsupialization" -
Bumps in Vagina.