Im on cycle 4 of tracking and trying and only noticed this symtom once in my cycle. It's not monthly occurrence, but this month I am so tired. It was my first symtom 8 years ago when I was pregnant. The only reason why I think I'm not is all the negatives I received recently. How many other females has extreme fatigue post ovualation and why do we receive it and still get the BFN. It will go away before my period!