AF question

Breanna • Walker Ray 💙
How do you determine that your period is actually over? I've never really paid much attention to it but now that I'm TTC it's something I was wondering about. Today is my 4th period day and I'm barely bleeding, it's just brown and it won't even use up a whole regular tampon within like 4 hours (sorry tmi). My period is usually like 5-6 days but I'm thinking it might be out of whack because I just got off the pill.