6 weeks pregnant, dark brown discharge

Ashley

So I'm 6 weeks pregnant I noticed light brown discharge yesterday called the doctor and they said it was normal and they did blood work to check my hcg levels. This morning I woke up and it's a darker brown now. I've had 2 miscarriages previously and I've looked up dark brown discharge and some says it's a miscarriage. Can someone please ease my mind and tell me this is normal.