Is it possible to be on the birth control pill for 6 months, then get break-through bleeding...?

I have been on the birth-control pill (mycrogynon 30) for 6 months and have never had a problem with it, but this past couple of weeks i have had a bit of break-through bleeding (started off really light and has got slightly heavier - but nothing like an actual period). My period is not due for over a week.

Is it normal to be fine then to have an effect after 6 months?

I have ran 2 packs together without taking the weeks break, but i can't see how this has caused the bleeding as i have always done this... i usually do 2 packs then take a break, then 2 more packs then take a break again, etc.

So what do you think? Is there a chance that i could be pregnant (although the bleeding has lasted for 2 weeks now)?

Yes, it can occur that breakthrough bleeding occurs after 6 months of using the birth control pill. It is especially common for a lot of women (myself included) to have a hard time with taking the pill packages back to back and not using that last week of pills. The reason is because the body is so used to having a period and when it is forced to do this for medical reasons like in my case it reacts and wants to try and have a period so henceforth the breakthrough bleeding.

I would recommend getting in touch with your dr to let them know what's going on so that they can evaluate the situation a bit further.

you took too many. thats why. you HAVE to take the weeks break.
I don't understand why people think its ok to skip the placebo week.

Skipping that week like you have been doing is why you are getting the breakthrough bleeding.

There is always a chance you could be pregnant if you are having sex. Pills are not 100% effective, especially if you aren't taking them as prescribed.
On Kariva (pill) for over a year. Skipped the placebo week ONE time and will never do it again. Breakthrough bleeding as well as taking several months to get back on track, not knowing when I'd have my period again.