Is the test line getting darker?

Took these test two days apart, Wednesday & Friday because of some light brown spotting Wednesday morning which has not returned.. I have no symptoms really just heavy cramping, a backache & occasional sore boobs. Period was due Monday so I tested.. & then had the spotting Wednesday. Trying to see if the lines are getting darker & we are progressing. After 3 mc I'm nervous, I haven't even called my doctor yet..