The BFN after the VFP

Yesterday I received a glimmer of hope in the form of a very faint second line. My boyfriend and I cried over it and then proceeded to make love over it. I went to bed last night on cloud 9, only to wake up today to my worst nightmare. Tested again only to see one, lonely line. This time I wasn't shedding happy tears. To add to the negativity (pun intended), AF has the audacity to show her face... or perhaps it's baby that could have been. I'm not entirely sure about anything anymore.