PANDA-
I do not know if you know this..
The first 3 months on BC pills can be full of spotting, bleeding, and irregular periods. We usually tell women to not switch until the 3 month adjustment time is up, unless they have SERIOUS mood/depression side effects.
I most likely is not related to your abortion, but related to YOU. Some women, like ME, cannot use any hormonal bc methods.
AN abortion is done just like the surgery for a regular miscarriage, and many of those women have FEW complications.