Hi My Name is Dr Ehsan Ullah and Welcome to the Health Care Majic I have gone through Your question regarding Breast Cancer concerns you have mentioned about prolactin level and your concern is regarding its association with Ca breast ... prolactin levels raise in various conditions including Breast examination, Pregnancy ,Lactation/ Breast feeding , exercise, minor surgical procedures, stress /anxiety , high protein diets , sexual activity specially sexual intercourse so you can t associate this single factor with Breast Cancer. Every breast lesion Must be consulted with doctor for proper work and early treatment /management. you have mentioned your age n also your birth history mentioned that you never gave birth. these two factors need to be discussed with your physician along with Sexual history . but you haven t mentioned about family history . breast cancer has association with family , for any breast mass, you need not to make yourself worry by assuming it as always a case of Cancer ..there are many breast conditions which are benigh i.e innocent you should go for the proper work up and keep in touch with your physician hope my this answer covers your concerns If there is still any concern , you are most welcome anytime Dr Ehsan Ullah