I have a similar problem from a slightly different angle.
When I was younger, I was on microgynon for medical reasons (three month period) with no side effects. I’ve just started taking it again, and my first period has now lasted for two weeks with no sign of stopping. It’s a constant light flow, and there’s no pain, so it’s fine, but I’m starting to worry because I’m going on holiday soon. A nurse told me not to worry yet, that if it carried on through the second pack, then we’d just change it, but we’d have to wait till the second pack to really know. I’m just a little worried because of the problems I had before, and was looking for some reassurance. I wonder if anyone else had had similar adjustment problems?