PPT 6 DPO?

Cheyenne

I got my first positive test 6 DPO using first response early result. At 7 DPO I took the test that is supposed to show result on first day of missed period (I didn’t realize what I bought), and my missed period wouldn’t have been until the 13th of this month and I got the positive on the 5th.

Sorry if this is so confusing, but I’m saying all of that to ask- how did it show so early? Also pregnancy symptoms started happening around 4 DPO.