Brow period

So... I guess what I would like to know if I am the only one who starts her period with brown spotting. Almost every month I will have 2-3 days of light vaginal discharge that will be from a light t a dark brown and then I will have my "normal" period blood (you know, red blood) and this will be maybe another 1-3 more days and usually while I'm on the pill my period will be super light and heavier but still light while I am not on the pill... I can't help but think that I have some kind of blockedge there... However I don't experiment any pain,
I mean the normal period cramps but that's about it...