Pregnancy tests not getting dark enough

I found out I was pregnant on Wednesday. It is now Sunday and my test line is not as dark as the control line. I feel if this were a healthy pregnancy, my levels would be high enough now and my test line would be as dark. Advice? Happened to anyone? Pics of tests below

Would also like to add that I am a week late and approximately 5 weeks 2 days. Going to the doctor end of this week.

Wednesday

Friday Saturday

Today