Had a full regular period oct. 13-16. Normalflow for me. I'm not on Bc but I track my periods I have for almost 15 years now. I'm 24. This month I started on the 9th this month which is about when it was supposed to. However it was very light, and very short. Usually I have a very heavey flow followed by a few light days. I took a hpt it was negative. Didn't think I was thought. We are careful. But is is normal to have a light period every now and again, or maybe a cycle change?? Last November 2013 I had a short one as well?? Just curious if anyone else does this too. Thanks!