So my period starts every month on the 15th this month i was 2 days late n my period was soooo light n its usually normal and i usually have it for 4 to 5 days tops but this month i was 2 days late it was light as ever (i started my period when i was 13 n have never had one like tgat bwfore in my life n im 27 now) if i got to my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> it now says i have no period n February im not fertile until march at the end of march i have no period but n april i have no period again is this a clich n the app or someone tell me