Faint line

Hello beautiful ladies . So I took a hpt today and a very faint line came in at 7 minutes . This test says not to look at the test after 10 mins . So it’s not a evaporation line . My question is could I be having a chemical pregnancy? Also show me your faint lines with this kinda of test that became darker .

I also wanted to mention I have two boys ( one in heaven ) with them both this test always picked up hcg faster that first response but I always tested when I missed by period so they were pretty dark , this time around if I am pregnant I am only 3 weeks 2 days going by the first day of ny last period . I took this same test 4 days ago and it was negative , I even looked up after 20 mins ( even tho I am not supposed to ) and it was negative all the way .

Please tell me the good and the bad , I don’t want to get my hopes up but also it would be really nice , this would be my rainbow baby , I lost my son Matteo and 24 weeks pregnant due to his umbilical cord 😭.

Anyways sorry for the long post .