Af 3 days late ewcm instead?

Briana
Hey. I had 2 days of light pink spotting Sunday and Monday (2/14 and 2/15). I have had nothing since. AF is 3 days late and I have ewcm instead. Still got a BFN this morning. Have been having left sided pelvic pain since Sunday (2/14). My doctors office won't do a blood pregnancy test unless my period still isn't here by 2/29 and I am still getting a BFN on home tests. Any clues or personal experiences are greatly appreciated. Thanks in advance!