I'm late, not pregnant

Stefanie
Hey ladies, I am feeling very defeated this morning and just needed to talk to people who understand.  
My husband and I just began trying to conceive our 2nd child, it took us 1.5 years with our first.  
I have been feeling all symptoms that I might be pregnant, nauseous, frequent ruination, fatigue and headaches.  I though I even might have seen a faint line on a previous test taken.  And now I am 1 week late this month for my period so I was so excited, and then my pregnancy test reads "not pregnant".  I was so bummed:/ what a mean trick Mother Nature! Here's to contributing to try and not giving up or feeling sad.  I am trying to be positive!  
Thanks for listening!