Normally my periods are 4-6 days. This month my period was just one day late, it was normal day 1-5 then day 6-7 I was having Brown discharge day 8-9(today) I'm having pink discharge. I'm not on any birth control and my cycle is almost always normal. Is this somewhat normal or should I be concerned?

If you feel concerned then I would check with a doctor at least you will know for sure.It might not be anything bad but still I would get checked anyway,I hope this helps some.I know you wanted a more detailed answer but I am not a doctor.I just wanted to tell you that I wouldn't put real trust in people who don't know anything about medical problems.Go to a doctor it never hurts to be safe.