My breast have been hurting a lot lately and when i go to the restroom I've been getting some yellowish whitish discharge what could this be?

Tender breasts can be have several causes, most notably pregnancy and fibrocystic disease. If you are not pregnant, it is probably the latter.

Fibrocystic disease can also cause a greenish discharge from the nipple, and it often gets worse just before your period.

Whitish yellow vaginal discharge can be physiologic (normal), or can be caused by vaginitis (vaginal infection, in which case you might have itching, burning, or a foul odor). Vaginal discharge can increase prior to menses, or during pregnancy.

If you are concerned about these changes, you should see your gynecologist.