tuesday morning i took a cvs early pregnancy test and it was a faint positive. then later that day i took the other cvs early pregnancy test it was negative. that evening i took a first response and it was negative, then the next morning i took the other first response and it was negative also. i have no idea when my period is due cause it is extremly irregular. has someone had this happen to them or anyone they know; if so does this mean i maybe pregnant or not?