I have a hard painless lump along my bikini line and have no idea what it could be. it randomly showed up about a month ago and has not went away. ?

Get checked by MD: Any lump on the body should be checked by a physician/surgeon in order to find out out what it might be. Most such lumps are bening(and do not grow in size). But some grow in size over a period of time. That is when we worry that the lump could be cancerous. I would advise you tov see your doctor and get this lump examined. He/she may suggest removal(excision) or may elect to watch/observe it.