Hi, why do my breast feel so heavy, i don't think im pregnant because i had a tubal ligation 5 years ago?

Hard to tell: Do you have any discharge or any lump or did you gain weight. Consider a visit to your doctor

Hormone: HI, sometimes during the 2nd half of the menstrual cycle due to excess of Progesterone the breast can feel heavy and also the women retain water and feel bloated.

Breast heaviness: Mastitis is the inflammation of breast tissue. It can be infectious or non-infectious. If your swelling persists, be sure to see the Doctor asap and get an examination and some diagnostic testing. Best wishes.