spotting 8 weeks 3 days

De
This is my second pregnancy first one ended in a miscarriage at 5 weeks. I started spotting today no cramps. I know they say it's normal to spot but my mind is immediately thinking something is wrong. How long before I should go to the ER? Has anyone had a similar experience that did not end in a miscarriage? Please please keep me and my baby in your thoughts and prayers.