Do strong/weak lines on pregnancy test matter?

Eren
Hi everyone and thanks if you are taking the time to read this. I had a miscarriage early 2016 and almost a year later I am finally pregnant! I am so scared because I haven't had my first ultrasound yet but I am about 6 weeks. 
The first time around when I took pregnancy tests the lines were kinda faint. I probably tested when I was around 6/7 weeks already. This time i took 2 test and both had super strong lines. I am praying and hoping that is a good side since I took them at about 4/5 weeks ??