I came on my cycle two weeks ago & now i'm spotting & its only enough to wear a panty liner. my periods are usually very heavy this is not normal for me?

Keep watching: Periods can be finicky sometimes and breakthrough bleeding can happen. As long as you're still having periods you don't need to worry about pregnancy. And as long as this isn't something that is persistent, then it's nothing to worry about at your age. Please see a doctor if you keep having irregular bleeding though.

See below: You had an unusual menstrual cycle. However, unusual menstrual cycles don't necessarily mean that there's anything wrong physically. The menstrual cycle is under very delicate hormonal control, which can be influenced by things such as exercise, rapid weight change, emotional stress etc. . SEE: http://bit.ly/19cKee5 To be safe see your physician if you continue to have abnormal periods.

Irregular periods: Have you had recent sexual intercourse if so I would do a pregnancy test