I had tubel sterlization this past september and every month after my period ends two day later i get a brown discharge that last 1 to 2 wks?

Not normal: U need an exam, blood work cultures and an ultrasound.

Not related: There are many reasons for weomen to have intermittent bleeding between periods or brown discharge (which is usually old blood). They are not related to a tubal ligation, however, as your periods comes fomr th euterus, not the tubes. A visit to your gynecologist may be helpful in figuring this out for you. Perhaps there are polyps in the utuerus or your hormones are not in synch for ovulation.