Need to see the picture of wound , you can consult It could be a local infection if it's warm to touch and pus Is there, if from nipple discharge is there whitish , then get your prolactin levels checked , any fever ?

Consult privately on practo for medications under prescription.

Do you have any family history of breast cancer at a young age? If not it is unlikely to be cancer but to be sure you can get a mammogram And from when have you noticed this white discharge? You can also get your hormone levels checked You can consider taking a consultation for the same

Consult

Why to think of ca   in this young age.   Still worries go for mamgraphy   contact for treatment if you wish

Yes , discharge or underarm lymph node swelling can be early signs of Breast cancer and needs assessment . Do u have family history of breast Ca? Do u have done self breast exam ? Do u have found any nodule , lump ? Is there any change in size and texture of nipple/ areola ? Or change in skin texture. It can be early signs , including any watery discharge from nipples and should not ne ignored. Tenderness can be due to underlying abscess/pus or infection.do u have fever or any other complaints or on any other harmonal medications or contraceptive pills.consult me here on practo. You can consult now also.

May be poss depending upon the type of wound De history and consultation is advisable

Get your prolactin level checked