I am a 55 yr old female with a pea-sized, hard, slightly tender formation in my lower right groin area. It's almost as low as where the groin meet the top of the leg. Do you think it's a lymph node? I noticed it a few days ago. My left side, in the same area, has had a sharp pain that comes and goes for about a month now. Should I get this checked out? If it's not a lymph node, then what could it be? BTW- My aunt had Non Hodgkins Lymphoma that was prominent in her groin.