I don't know what to think...

Lisa
One: 5/25 FRER
Two: 5/26 dollar store (rexall) 
Three: 5/27 dollar store (rexall)
Four: 5/28 clear blue 
All taken with FMU. AF due 5/23. Light to moderate bleeding 5/26 pm thru 5/27 pm. no clots/tissue, dark red/brown color. 
So are these actually positives or evaps?! I'm driving myself nuts. Yes I know to test again with a pink dye, just wondering what y'all think....