Confused

Okay according to two apps that I use both state that my cycle should start on the 10th of January. But today I started bleeding not no heavy bleeding just a small spot, enough that a pantie liner can hold but I’m wearing an full pad. Question is do I log it down as my first day of cycle or wait until the 10th to see if it picks up and log it down on that day that my cycle has started ? Idk these early day bleeding confuses me. This happen last month as well I believe smh!