So confused :(

Ashley • My honey and I just got married August 30, 2014. I have a 5 year old son from a previous relationship, and we are TTC our baby #1.
I had my Mirena put in March 2009 after DS was born and had it removed May 25th of this year so DH and I could start TTC. My last period was June 1st, and lasted through June 5th. Before my son, I had regular, 5 day long periods, and 28-30 day cycles... I'm now on cycle day 70!! BFN and no signs of AF. What in the world could be going on? Feeling so discouraged. :(