FED UP!!! BFN!!! ARRGGHHH!!

I am 8 DPO 7days due before my period and tested with a cheapy test.. BFN!! I am literally having symptoms. My cervix is high soft and is a milky yellowy CM. I have come out in cold sores. My boobies are rather huge and veiny, sore all over and I have waves of nausea - I am also experiencing pain in my lower back.

It's just never my luck and feel like giving up. Bluurrggghh... why is TTC so hard, why don't anyone tell yiu what your in for or at least get you ready for all this.