Thanks for the query to H.C.M. Forum.
Since , you are having irregular bleeding , scanty bleeding , as these symptoms may be due to abnormalities in uterus
( any disease like fibroid
May be due to hormonal
imbalance. Tubal ligation
is not responsible for any bleeding disorder
Tenderness of breast may be due to hormones imbalance.
In my opinion consult a gynaecologist and get his opinion .
Get in blood for estrogen
, F SH/ L H ratio. androgen level.
Get in ultrasound
of ovaries with other genitals.