Negative but feek preg for days

Negative blood test , negative urine test . Spotting ( sorry if it’s TMI on the photos ) But I spotting on and off for a few days ( very light , only saw when I wiped ) I’m 23 days late on my period .My last period was oct 10th ( beginning date ) Has anyone had an issue like this . My breast been hurting , been emotional, and had a metallic taste this morning . Tested for all STD. , 100% clean . I’m just confused what’s going on with my body since I’m not pregnant .