How long do they usually last? I just went back on the pill having been off it for 3 years after being ON it for 10. But I immediately started to feel awful and so just before the end of week 2, I stopped. A few days later I had some very light bleeding and now on day 4, the flow's actually gotten a bit heavier so it's like an actual period.

Is this normal, even with being on it for such a short time? I still feel terrible and this is just compounding my worries.

Thanks.