Okay so I usually start my period on the 8-10 and it ends in 5 days, well I haven't started but my breasts are so sore, and I swear I've went through all the symptoms that I normally do but still no blood. So I open up my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> app this morning and it says "period ended 1 day ago" but I never checked it to say that I started.