Scared!

Julie
I'm 8 weeks pregnant tomorrow. We miscarried in October so I've been on edge with this pregnancy. Taking weekly pg tests seems to help me stay sane until my appt next Thursday. Last week the postive line was really dark but today it was lighter like how it was when I took my first one. I'm scared that my hCg levels are lower which means I've miscarried again. Has anyone experienced this and has had a healthy pregnancy? I just want my baby to live and to be healthy! Please help!