first BFP since miscarriage


Two months ago I found out I was pregnant and six days later I lost it. I don't know if that's a chemical pregnancy or counted as a miscarriage, but yeah. It was four days after I was supposed to get my period that the bleeding began. Well, this month I got my first BFP since and I'm scared I'll be in the same boat in a few days as my period was supposed to come Monday.. here are my latest tests, the top being yesterday and the bottom being today. I'm worried because the bottom one isn't as strong as the top... is that a sign of a chemical pregnancy or is it just because the top has dried?