Am I having a miscarriage ? 💔

Waiting to hear back from doctor.. but yesterday morning I had dark red blood in my pad and it was a a good amount.. but ever since then it’s been dark brown and light now. I have no cramping, am I having a chemical miscarriage? I’m confused.. period was due 2 days ago and I’m still getting faint positive pregnancy test, also I would be 4 weeks & 5 days pregnant. Any input would be great! Thanks