AF late but BFN

I had a Miscarriage May 27-- first period July 11 and ovulated I think super early CD 11 or 12?.. I noticed (TMI) hanging thick EWCM 5 days after my period ended. A week later I had cramps for 3 days in my low pelvic area, made me think implantation cramping--- Now Period was due 5 days ago (8/8) and nothing. I'm now on CD 34, I took a test yesterday and it was a BFN. the night before my period was due I started terrible sore nipples for 3 days, nausea all week, lightheaded/shortness of breath, etc all the same symptoms I had with my first pregnancy in May. I'm so confused, has anyone else had this happen before? Idk what to expect