My Husband And I Are Trying To Conceive. Last Month

My husband and I are trying to conceive. Last month was our first month "trying" my LMP was July 9th. August 6th I had 1 day of bleeding but that's it. I've taken about 5 tests last week all came up negative but took one a little bit ago and it was very faint positive but then again I always think I see a line. I'm so confused :( and the one day period is really throwing me off.