Positive Test 9DPO READ THIS

M
Today I had 2 positive tests! One FRER, and one Walmart 88cent one! My doctor did stat labs and just called me. She has NO CLUE HOW I GOT 2 POSITIVE TESTS because my levels are only at 8!!!! Which is okay because I just ovulated last Wednesday, so technically baby just implanted 😊😊😊 I CANNOT BELIEVE IT! 
How on earth did these 2 tests show positive? Lol. Thank god for this baby 👶🏼We've tried so hard and almost gave up.