Lighter lines in AM

Lauren

So I tested last night around 6:00 pm and got the first picture but then I got up this morning and peed in a cup so I could test after my husband went to work (about an hour later) and got the 2nd and 3rd pictures. The line from the AM pee is way lighter and the First Response test is negative. I’m 10 DPO. I’m not sure what that means?