Feeling so defeated

Jennifer • 💜Arabelle 3/12/12💜 👶TTC baby #2🍼 Ovarian cystectomy to remove 8cm cyst on right ovary 5/17/19

I'm 5 days late and show no signs of AF showing up but have even had a blood test done back negative. This is so out of the norm for me. I am never this late and I just feel pregnant. Any idea of what could be going on? Any advice is greatly appreciated.