Ok my right breast has a vein above my nipple. and a little bit of pain usually before or after my period. not pregnant i've ruled that out?

Sounds normal: Most women have veins that are visible on the surfaces of their breasts. Especially noticeable on fair skinned women. Sometimes these can become uncomfortable if they are compressed tightly in a bra. Sports can aggravate this. Another common issue is swelling and pain in the second half of the cycle called "luteal phase" tenderness. If the vein is hard to touch, redness and swelling in area see Dr