4 weeks 5 days pregnant & bleeding

This was my test at 14 DPO

Now I'm 17 DPO and I wanted to take another test to make sure it was still dark or darker! Well when I willed there was a decent amount of blood and my test is lighter. My pee was pretty light though and it was about 2:30 in the afternoon and a drank a bottle of water and a cup of coffee. The bleeding has almost stopped now but I'm still worried because of the test being lighter. Bottom test is todays.

This is the "spotting now"

With my son I was about 6 weeks pregnant and after sex one day I started gushing for about 20 minutes. My son was okay but even though we were not having sex this time could it be similar? I'm so nervous and need some answers. PLEASE!!