32 YO - Concerning symtoms

Hello all, 

I was wondering if anyone had experienced any if these symptoms and what the outcome was

- Breast lump

- light-headed 

- discomfort in armpit/arm

- nipple leaking 

- sensitive breast and feels like it's nervy (that may not make sense) 

This has come all of a sudden. I am not pregnant nor breastfeeding.

 

Thanks in advance