I don't know what to think!

So I have no idea what to think. Last day of AF was 30th, husband and I had intercorse the 5th when I was ovulating. 5 days later I had some bleeding that only lasted an hour. Two days later took pregnancy test which was positive, took one two days later still positive, then again today I started bleeding very light, today (AF is supposed to start tomorrow). I got paranoid so I took another test and it was still positive but I feel like it's lighter than the one I took two days later! :( my husband and I have been trying for 8 months! I want this to be true but with the bleeding I'm so afraid of getting so close! I don't know what to think.