Passing Blood clot(s) while on birth control withdrawal bleeding

good day my period came on aug 20th 2012 it was a bit late by 1 week i was strressed so didnt pay it any mind i started taking minigynon bc pills, period was light spotting till aug 26th it became heavy, after 21 days i was still seeing my period  so i switched to novynette bc as prescribed by my doctor no break in  between pills, period became light almost a spotting was told by my doc its withdrawal bleeding from bc, took the last bc pill from the second packet on october 01(monday) have gotten withdrawal period and just passed a huge clot dark red clumpyllump almost like a little ball im not feeling any pain or anything so i be worried because this bleeding just wont stop and its my first time on birth control.

[Sanjivani Wanjari, MD]

HI,
Birth control will usually normalise the menstrual cycle. If the bleeding is continuous and excessive then you should consult a gynaecologist for an evaluation. This can be because of messing up of the hormones or local causes like cervical erosion.
Hope this helps.