19/20 days late with an hour of spotting

Hello! I need help because I'm hoping someone might have experienced this before. I'm 19 days late about to be 20 tommorrow and I thought I was starting my period so I put in a tampon (R). I took it out 7 hours late and it was dry except for one or two drops of pink blood and a small amount of ewcm. Now on May 18th I had heavy ewcm so I thought maybe I ovulated late and tommorrow (20 days late) will be the end of the 2 week wait if that was ovulation. Should I just wait a few days or just test in the morning as planned? I called the GYN office at 14 days late and they said to wait until 28 days late before they can do anything. At a few days late I was in the ER for severe pain and they said it could be an ovarian cyst causing my pain but other then that they had no answers. I posted my calendar below to assist anyone willing to help.