Chemical pregnancy

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Since 4 days i am getting positive on different brand tests . Every Test was positive even digital one . But lines never got darker or fainter . My periods was due today didnt get any periods dont have any symptoms either that AF is coming. I have fever since 2 days . I am waiting for my blood result . I am pretty sure i am going through chemical pregnancy .i have different kinda pressure in my stomach . Can somebody else share their experince who experience chemical pregnancy .