Help..Line progression? New pregnancy?

In June I gave birth to my sleeping baby at 20 weeks 3 days. After having her bleeding went on for about a week and my bf and I were intimate after the bleeding stopped. I didn't bleed again until 5 weeks pp which i thought was my period after delivering but it was shorter and lighter than my cycles before pregnancy. So I took 2 test 2 days ago and one today. The one from today is bottom test. Does the line look darker? I really don't even know if it's possible for me to get pregnant before 1st pp period and still bleed.