Strange flow? Tmi, probably

So, my period started 2 days ago, a little late but not enough to worry, like, 10 days late but I'm irregular so that's normal for me. Anyway, the first day, I had a light flow, then yesterday it was pretty heavy and today it's just been spotting. My periods usually last at least 5 days, if not longer. And the blood is really light colored. Is that normal or could something be wrong?