I'm 4 days late today as my period was due on Friday. I've had spotting on and off since Wednesday. I took a test this past Sunday and got a very faint positive line and took another one on Monday and got another faint positive line, but looks a little darker than the previous day. But this morning the line looks barely there almost not at all. Has this happened to anyone else? Still no AF just some light spotting when I wipe every now and then. The tests are in the order they were taken. FRER on Sunday, riteaid brand Monday and ept today