I have a lump on my bikini line that has grown and is more painful than a few days ago. It is hard and swollen, noticed it years ago when it was small?

Skin Lump. Bumps and lumps can be a variety of things depending on the depth in relation to the skin, the duration, and associated symptoms. The timing of recent growth suggests infection on top of a pre-existing issue -- such as a cyst that got infected. If the lump is deep beneath the skin there could be something swelling in the abdominal wall (like a hernia). Surface lesions can also get inflamed.