I had safe sex (with a condom) with a now ex about 2 weeks ago, i just discovered was cheating. I noticed a small hard bump on my labia majora. It is uniform and feels like a ball under my skin, i pricked it with a pin and white pus and blood came out. I m covering it with an antibiotic cream. There is only one spot, raised, about the size of a pea and not really painful unless i squeeze it. It is in an area that i shave and would be prone to irritation. Is this an ingrown hair or something more serious?