Period talk

Sapphire

So ive been on my period for 5 days, and it start out little pink then it went to red with a lot of dark klotz i should say. Then it went back to pink and then back to red with alot of dark klotz rhen back to pink. I dont know whats going on. But if anyone has gone threw this please let me know. Also there was a big red klot in the bottom of the toilet twins. Someone please help me.