Confused?

I thought I started my period yesterday because I’d been having cramps and i started to bleed a little bit then I went to bed and woke up this morning to change my pad and there was barley any blood in it? And when I peed and wiped there was barley any blood on that either. And there’s a slight dark brown tint to it. What does this mean? I’m on the pill so I know it’s not a miscarriage or anything serious but usually the first night my period is the strongest and I barley bled at all and It didn’t look like my usual period blood either but I am having cramps and even my period headaches.