hi im 7 months pregnant and a few weeks ago i found theses lumps by my privates they are under the skin and on either side of my privates they dont hurt but they come and go and when they are up sometimes it feels like im sitting on a tennis ball do you know what it is ?
It's difficult to comment without seeing the lesion.  Still it could be Bartholdi cyst. If it's not painful then simple antibiotics are sufficient but if painful then it needs surgery.  Get yourself check by your gynecologist for proper treatment.