Four days late for period

My husband and I had unprotected sex within the window I was supposed to ovulate/the day after ovulation. Unsure of the exact ovulation date, but according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> it was within that window (11/5 & 11/6) and I had signs of ovulation as well. I am never more than a day late for my period. I took a pregnancy test 11/20 and it was a BFN. I was having EWCM with brown blood and occasionally pink. It was not heavy enough to even show when I wipe. Now, I’m just having cloudy, slightly brown sometimes EWCM. I have had light cramping off and on, but no sore boobs or normal symptoms I have before me period. Could this be a sign of pregnancy, or is AF coming soon?