How many false positives can you get

So basically I’ve just had my first cycle postpartum i was two and half months when I got it on the 26th of feb period ended 3rd of March I think I ovulated on the 11th of March I’ve been getting faint positives I’ve took 8 tests that I’m pretty sure have faint positives my husband says he sees something on them but on some he says only at a angle he sees the second line my digital I took says not pregnant but if I wasn’t why am I seeing a faint line on all 8 of the other tests

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