Missing period but not pregnant?

I am confused and concerned, wondering if someone has gone through the same. I am on day 32 of my cycle. I am usually very regular and my period comes on every 27-28 cycle days. I am trying to get pregnant and had unprotected sex during my fertile window. For the past days, I have been taking at-home pregnancy tests and they all came back negative, not even showing a faint line. Sometimes I feel pregnant but that could be PMS as well. My question is, should a pregnancy test be showing positive by now? I am adding my cycle chart. Thanks for your input.