So confused 😕

I had multiple bfp and then a week later (7/25) blood test is negative? <1.. I haven’t tested on a pregnancy test again yet but how’s this possible??? I have at least 7-10 positives, with 3 different brands. A week later negative blood test????

I’ve had normal cramping and pregnancy symptoms and still no period….

Please help🥺

Also my last menstrual was 6/25-7/1