i never really kept track of my period till i started using the ruby app, but anywho, im 2 days late for my period. my last one was on the 27th of August to the 1st of September. Its now the 25th , and its telling me i was supposed to start two days ago. Also, the day i was supposed to start it, me and my SO got intimate and can that affect when my period comes ? Sorry if this is a no brainer, this has never really happened to me before..