It’s not normal it’s called abnormal uterine bleeding, however it’s common in younger age due to hormonal imbalance , u should see a doctor, as it may lead to anemia

I'm a medical student. Definetly not. Not at all Periods don't bleed for a whole month. But as to what the cause is... Could be many things. Anemia is the most worrisome tho... Do you or the person bleeding like that have easy fatigibility(tolo medkem), pale hands, tinnitus (ጆሮ ይጮህብሻል)? It needs to be treated so tolo healthcare center bitheji would be nice.