I was wondering why my period was 13 days early?

I have never have an early time of year.
Answers:

for ppl that have pcos do u own normal peroids?

hormones. Sometimes period do strange things, esp. when you have a redeploy in diet, stress, or contained by the amount of exercise you're doing. When I was at central training, and after, I didn't have a time for almost six months.

Are you taking new medication? Are you more stressed? Are you working out more than you have? Any small changes can effect your interval. If you're really concerned though, go see an OBGYN. But they'll probably report to you the same piece, unless you're having unusual backache. Keep track of your days and your bleeding. If there is anything else strange variety a note of it. So if you necessitate to go to the doctor you enjoy all that info.

Help near the PILL?

No idea but it happen. If your periods don't turn back to mundane see your GP

How wwould my mom kno if i'm a virgin or not?

Maybe cos its spring? Or are you hanging around near a different group of women than usual? Womens periods tend to be coordinated if they spend plentifully of time together.

Yeast infection?

I had this problem only just myself - as long as you're not bleeding between periods, you should be OK. It can be something as fickle as the moon's cycle.

Keep an eye on your periods and facts the start/finish dates. If you spot anything unusual afterwards run, don't walk, to your GP.

And if your term is 13 days LATE, that's really time to worry.