My usual cycle is 29 days. I am on day 36 now. My last period was September 8th-12th. I had unprotected sex multiple times, but most importantly the days 2 and 4 of my fertile window (September 26th and 28th.) My period is 4 days late, and it's usually never late more than a day. I took two tests on the 11th and they were both negative. I don't want to jump to conclusions, but there aren't any signs of AF coming...