I've been on the pill for 3 and a half years now and, despite forgetting to take a pill a couple of times, I have never had any problems before now. However, this month I have started with an irregular blood flow which has been constant (but not as thick as when on my period and with discharge,) for the past 2 days, 8 days after my last period ended. I have also been experiencing some minor stomach cramps. I take my pill just before I go to bed (between 22:30 and 23:30) and have not forgotten to take one for the past few months. Any idea as to what may be causing this?