Okay, I'm about to turn 17 and I'm still a virgin. I got my period a little bit early and it didn't last as long as it usually does. Then I restarted it again about a week later. It's very light, but I'm wondering why this happened...
There are many things that can effect a woman's cycle. Diet changes, weight gain/loss, increase in physical activity, stress (which is a hugggge factor!) etc. Also, depending on how old you were when you started your period, this could just be your body getting used to is. Some girls report that it takes them around 2 years once they start to be regular. Best of luck!