So I am not trying to conceive but I believe fertility is also a sign of overall health. Anyways I usually start my period on the first day of the new moon ie today. However I startd mine yesterday this month, the twenty eighth day of the last moon cycle. I think last month I started a day early as well. Any insight on why ones cycle would suddenly shorten by one day? I did move from a rural area to the city about four months and think the constant noise and light at night might be messing with me. But I can't afford blackout curtains or sound proofing my apartments. Any other suggestions on how to return to regularity?