I have a medium sized bump under the skin of my vagina . It hasn't came to a head yet but I have had it for a week . And now I have a smaller one right beside it . I'm only 16 and I really don't kno what to do . I also have one under my arm that feels excatly the same . I'm just really hoping it isn't cancerous. &I Yess I have had sex but it was over a month ago