Yo. I am here today because my mom was freaking out over this, I am my little sisters who's 12 brother writing here to ask for some help. My little sister started her period a week ago and ended it about 3-2 days, then her period started coming back, she had little blood so she thought "maybe it's the end" and didn't wear s pad, so these past 3 days she had been staining her underwear with her period blood and the flow has become heavy and decided to put her pad back on. Is it normal for a period to stop, then start again? Why is her's lasting particularly long. Thanks!