AF 4 days late, but BFN

Hi there - my husband and I have been ttc for 6 months. My cycles are using 26-27 days long. This TWW I’ve felt very different with a number of pregnancy like symptoms (very tender breasts, some cramping, daily creamy CM etc). My period is currently 4 days late but this morning I had a tiny bit of spotting when I went to the toilet (sorry if tmi), I was convinced it was AF arriving but then nothing has happened since. I’ve taken a pregnancy test each morning since my period has been due and they have all been BFN. I’m really struggling emotionally between getting excited I might actually be pregnant and just putting it down to late ovulation or my cycle regulating. Any issues or ladies who have had similar issues experiences?