You really should go see a dr. If you don't have insurance, check to see if there's a health department in your city. Last resort, go to the ER.
I don't know anything about what you've describedn however, sometimes lumps are bartholins cysts but they really swell in either the right or left of labias (outer lip area basically). They can be small or as large as an orange, are sometimes painless and sometimes very painful.