14 days late...no period...3 pregnancy test = negative! What is going on??

Meg
Hi there,
I have no idea what is going on!!!???
I am usually never late on my period, maybe a day, two most in my life.
I am currently 14 days late! I have done 3 pregnancy tests and all have been negative 😓
I have no clue what's going on!  I've done three rounds of clomed, 2 rounds of 50mgs and 1 round of 100mg.  
I was tested on day 21 of my cycle and was told on Valentine's Day of all days that my progesterone test showed that I didn't even ovulate.  So I haven't had my hopes up of being pregnant because of those results. But now I don't know what to think!!??
I've been pregnant once before and had a miscarriage in Nov 2015 and when I was pregnant before I had a lot of the same discharge as I had then.  
I've heard of getting many people having many negative tests before they finally get a positive but shouldn't I have had a positive by now with being 14 days late??  I just know my heart gets shattered every time I take a test! 
I just don't get what's going on!!  Why if I'm not pregnant?  And/or why am I not getting my period??
So crazy emotional it's not even funny!!!
Any help would be greatly appreciated!
Meg

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