Periods

Mangago its not a suitable place to ask about feminine health but im just praying that theres a gynecologist or something similar reading this cuz im losing my mind.
I had my periods normally all my life, but my most recent one was 10 days (my normal is 5-6 days) but its still normal right. It completely stopped but then suddenly on day 15, it came back, in large amounts. So i searched the internet and all the answers are scaring me. But then i ask my friends and they said its a normal thing. Who am i supposed to trust now