Took a test on Sunday came back with a faint positive, took the same brand on Monday and compared the tests also thought I seen a line, so took a few pound land strip tests which were negative, took the same brand yesterday and another faint line so left it and tested again this morning and another faint line 🥺 just so unsure as to why it wouldn’t be getting darker. Will post all tests in order. Can anyone give my advice? Are these a bad brand of tests?