is my line getting lighter? please help

I've posted this in another group and literally got 0 responses 😩.. this my second round of clomid and I'm terrified of an etopic pregnancy and/or MC as we had one in Nov.In the first pic top test is Saturday's and bottom is today's. I know the top is two days old so I'm not sure if it just dried darker. The second pic is Saturday's within the timeframe and the third pic is today's.... do you think today's looks lighter? do you think I should be worried (I'm going to call obgyn but until then please help)