I need some reassurance and help

This was last tuesday today my period is a week late and I’m wondering why it’s taking so long to get that really dark positive. Me and my husband have been together 9 years this Friday and have one angel baby in heaven.

This was Thursday not dark at all which put me in a very depressed type of mood and had me all in my feelings.

This was yesterday really light a bit too light to be caught by the camera.

This one is today and I’m wondering if it was gonna be a chemical wouldn’t it have happened already?

Like when I look at it in person it doesn’t look like it’s too light and looks like it’s colored but I’m wondering why I keep getting faint when I’m 5w2d according to glow please help. Like I’ve bought these test from four different stores and still I’m at a loss ( target Walmart Walgreens and rite-aide)