On March 17th I took a pregnancy test and it was a very dark positive. I haven't allowed myself to get too excited because I had a miscarriage in November and am terrified it will happen again. I decided this morning to take a pregnancy test jusy to ease my mind. Well instead of it being a dark positive, the line was a little faint Should i be worried? Could this mean i am having a miscarriage and my hcg level is going down? HELP.

This is the test I took this morning. All the ones I have taken before were darker. I'm 5 weeks and 2 days.