Anyone have this?? Is there still hope? 😓

Sorry this is long, but I need to vent

So, along with some other symptoms, I had mild, dull cramps 8-9dpo. 8dpo night got super uncomfortable. Not really painful, just couldn't get comfortable to go to sleep. It was my lower abdomen into my lower back. 9dpo I still had the mild dull cramping, but not as bad. Had a couple of quick, sharp pains in my right breast during the day. But only a couple of times. No spotting or anything. No sore/tender breasts or nipples. (I never have tender/sensitive breasts before or during AF) Today, I'm no longer cramping. Tested with FMU frer and it was BFN. Not even a shadow. Anyone else have this happen and get a BFP later? I'm really feeling down today. Do I still have any hope at all this cycle?