Help please!

Shelby • Expecting baby number 2!
So I'm 13 weeks and 6 days. These past couple days I've had some light brown bleeding. The bleeding stopped but now my discharge is tinted brown. No cramping of any kind except the growing cramps. I've even went to the er cause I didn't do this in my first pregnancy. They said everything is fine. But I still feel like I might lose the baby. Has anyone else have this happen to them. Is so can you give me comfort to this! I go see my ob this coming up Tuesday.