Spotting on the pill

I’ve been on the same birth control for about two years and haven’t really experienced spotting that much, like this is probably the second time. I usually skip placebo week and don’t have a period. I began spotting last night and more today, the blood looks brown like old period blood. I started the third week of my pills yesterday and either have a period or start a new pack next week. I’ve also been experiencing cramping on and off for a few days as well. Like I said I usually don’t spot so I’m not sure what it means or what I should do, please give advice thank you!