What's the earliest positive pregnancy test any of you all gotten?

I'm currently TTC, I'm either 5 ot 7DPO. I say that because, calendars and charting say I should of ovulated on the 21st of nov. However, I believe I ovulated on the 19th of nov, seeing as I had slightly cramping and some clear thin CM. Either way it go, I.BD'd from 19th to 21st. My LMP was nov 7th. Has anyone experienced a positive pregnancy test this early? Thanks for advice! And baby dust to you all :)