does anyone know the answer to this question?

Hey lady's. my last period was on my honeymoon December 15th 2016.  And I have not had any sign of AF since. And I have not ovulated either. Since me and my husband are TTC I was really excited to start tracking my cycles, but now I can't. What could this mean? I took a pregnancy test 3 days ago and received a BFN😥 I'm just feeling really depressed about all of this. Thoughts ladys?