August Miscarriage, September BFP!? Help!

Okay y'all, I had a miscarriage on August 30th/31st, the bleeding stopped September 4th. To my knowledge I never ovulated, I started testing on the 8th just to see where I stood in my cycle, and the closest I got to a positive LH test was on September 11th (Line was bright, but still much lighter then the control line ((Easy@Home Tests)) and it went lighter from the 12th on, and has stayed that way since. September 18th, I took a test as I was feeling off and wanted to just see to make sure, it was stark negative of course. My partner and I were not trying, however I still didn't feel right and tested September 21st and today, and got these!! Is there really a line? do these tests have common evaps?? I'm both happy and scared, as I haven't even gotten my first period since the miscarriage and going off the darkest LH test I got, I would have ovulated September 11th, making me 10dpo, first 2 test are from the 21st, second 2 are from today! Could I have 4 consecutive evaps??? All tests were originally read within time frame and looked exactly the same, picture was taken right after bottom test was taken.