My last period was December 19 -24. On January 9 and 11 me and my boyfriend had unprotected sex due to me thinking it was my fertile period due to another calendar I was using. 6 days after i got what I thought was my period and according to this app it was but it wasn't like my normal period. It was light on I only saw blood when I went to the bathroom but it lasted 5 days. The calendar I was using before says my period is due to start the 24 I'm so confused about what is going on with my body right now being that I've been nauseated Moody irritated and having hot flashes. Someone help me PLEASE.