Do these look okay? Why arnt they getting darker

Im sorry if this is the wrong group i just dont know what group to post this too but i am worried. I had a miscarriage at 16 weeks in july and now im so paranoid about another miscarriage or chemical. Why arnt my lines getting any darker? The top if yesterday morning the bottom 4 are today afternoon. Am i going to loose another baby? If there is a different group let me know im just extremely scared.