I started my last period on May 1st and ended on the 5th. According to a couple of different apps (including this one) I had a high chance of getting pregnant on the 18th. My husband and I made sure to have intercourse that day and we also did the day before as well. I’ve started taking pregnancy tests on 7 DPO and it’s now 11 DPO and they have all come back negative. I’m not having any pregnancy symptoms, other than having brown spotting over a week ago.. I was kind of hoping that was implantation bleeding but now I’m thinking it wasn’t. My next period is supposed to start in four days. Wouldn’t I get a positive by now, even if it was the faintest line??