Periods are confusing🙄

I’m so confused bc normally my period starts out like...Niagara falls out of my vagina, but this month it’s so light i didn’t even fill a regular flow tampon...but yet my cramps the first day were MISERABLE. It’s day 3 and it’s progressively getting heavier, but i still can’t fill a tampon fully. I used a cup the first day and i expected it to be pretty filled when i eventually took it out but it was so empty i was annoyed. The blood was light pink the first day and by day 2 it as the deep red normal period blood but this is NEVER how my period goes. It’s always Niagara Falls for 3 full days then it tapers off. Is that normal??