I took a home pregnancy test a couple of days ago and had a faint positive line as the test was working. By 2 mins post, the line has disappeared. I don't remember having this result when I had my son. Menstrual cycle shouldn't start for another week, but cycles have been different since I stopped taking my birth control. I don't want to use a bunch of tests waiting for a positive and just wanting to know how long I should wait to take another test. Thank you