5 weeks pregnant, tests not getting darker

Hi everyone, I found out a week ago that I am pregnant with my first. I would be lying if I said that I’m not extremely worried that I’m going to lose this little bean. I wanted to share my pregnancy test progression with you all to get thoughts. I am 5 weeks pregnant today, my symptoms are sore nipples, intermittent cramping, and fatigue. My HCG line on my test didn’t seem to get darker since

the test I took 2 days ago and I’m worried. My test line is also still not darker than the control line. Should I be worrying that there’s something wrong with my pregnancy?

Test from 2 days ago.

Test from this morning.