Not sure

Been feel under the weather wrote it off to cold & flu going around tested positive followed by 2 negative and 2 faint lines(feel i was testing wrong not sure); but started like the app said wrote that off the period or a loss but The past 3 test this week has had faint lines. The app Said i was to start Friday i didn't but early this morning(sat) i stared spoting haven't been about to make appt yet do to work and holidays just feeling bit confused now andnot.sure what to think.