hello i read your question and understand your concern i would like to ask that * your age * marital status * any kids * family h/o breast cancer/any other cancer * which type of chest problem you were having in past? * which type of pain is that * is that lump itself is painful? * is it hard fixed or move able? *do you feeling pain in lump on pressure/touching? * any discharge from that lump/or nipple of the affected breast * have you examine your other breast is there any other lump? * any lymph node swelling in both the axilla? so i would suggest to go for one USG breast first and then go for Mammography and other tests and meet your gynecologist for further advise and treatment accordingly i hope my answer will satisfy you good luck & tc