So I gave birth to my 3rd child on June 24th. I had my first period on July 27th. My bf and I had unprotected sex the 5th and 7th of august and i ovulated approx around the 8th. On the 12th I had spotting. I felt like it could have been implantation bleeding since I'm not due for my period until the 24th approx. On the 15th I tested way too early I know, but I just couldn't wait. Both FRERs were positive..faint, but positive. They were not evaps for sure and yes the lines came up under 3mins. The next day I decided to test with the same brand but both seemed negative. I then bought Answer the next day and both were negative. I'm freaking out now that it was a chemical pregnancy. I know you can have hcg in your system 4-6 weeks after birth, but i have already gotten my first cycle and was 7 and half weeks Pp when i got the positives. I have also read that tests even in the same box or same brand but different lots can have slightly different levels of sensitivity. So I am hoping that it was just a sensitivity difference in the same brand and not a chem preg since I tested wayyy too early. Today I am still 7 days before fmp. Has this happened to anybody else? Same test brands but getting negatives after positives yet you were still preg?