Hello doctor, i have a very mild breast and nipple discomfort only on right sidr which happens when m working and seems to calm down when i m sitting or resting. I have baby 11 month old who was formula fed since she was 3 months but i still have bit milky discharge from both breasts. Also some time i will have shoulder blade pain too. I had it checked to gyn when it happend around before 3 4 months and she found no lump or so and pain resolved itself whithin week but this time its been 15 days What can it be?