So I am not yet pregnant according to home pregnancy tests but my husband and I started trying on the 7th and I used the fertility testers and we of course tried during the peak fertility days and now it's time for my period and I'm 4 days late! I am never late but I keep getting negative results and it's so disappointing. I'm not sure if I am testing too soon or if I just don't understand how they  work when the box says "5 days sooner" I'm just discouraged and confused and I have never had a baby before so I was hoping for some advice?