Period bleeding question

Hi! TMI if you’re grossed out by periods and discharge. Anyway, my period is usually on time or within a few days month to month however I only bleed one day then the 4-5 days after are dark brown discharge then gets lighter by day 5.

My questions are do you think this is a sign of infertility or lack of ovulation?

And when tracking my period do you think I should count all 5 days (1 day blood and rest brown) as all period days? Thanks!