Scared of Miscarrying again

I’m currently 8w1d with what will be our 2nd baby. I naturally miscarried my first at 9 weeks. Had a beautiful baby girl a year ago. This pregnancy I haven’t had any symptoms. My “confirmation appointment” is next week. I’ve been taking pregnancy tests here and there because I’m still in shock and I’ve heard the darker the line the better. Well my lines are getting lighter. Has this happened to anyone of you ladies that didn’t miscarry and had healthy babies?