Don't worry! Intermittant bleeding is totally common- especially after just starting up or changing bc. I use the patch- I love it and it totally helped me as far as not having to remember when to pop my pill. I use it continuously though- so I'm not "supposed" to get a period, but sometimes I have "breakthru bleeding" too- often brown or even blackish- just old built up blood- no big deal. My dr said it's just normal "clean-out" ! Have you thought about the patch? It deffinitely helps with hormone fluctuations- because taking the pill at the exact same time- although not a requirement for everyone neccesarily, can cause some people to have bleeding, headaches, mood swings, nausea, etc... I know 'cuz I had all those with all my pills when I would "forget" to take it on time. Hope this helps!