Miscarriage?

I’m scared I’m miscarrying. I had one episode of very faint light pink discharge yesterday and had some back pain all day. I called my doctor and they said that that’s normal around this time and that my back pain is probably because my uterus is tilted. She said the spotting should be pink or brown in color and may last a few days. I haven’t had anymore spotting since that one episode, but now I just don’t feel pregnant. Like my boobs hurt less, I just feel like I’m waiting to miscarry. For those of you that had miscarriages how did they start? I’ve had a chemical but I knew what was happening before I started bleeding.