7 weeks 6 days pink/brown spotting.

So I'm 7 weeks and 6 days. I went to wipe and there was pink and brown. Not a whole lot just a little to notice. 
I'm worried cause I just started being able to eat and keep food down 2 days ago. My boobs are still very sore and backaches. 
I lost my first due to a missed miscarriage and they couldn't say why. 
I'm not cramping at all but I am very very nervous. 
Going to call my doctor in the morning.  
Has this happened to others? I'm freaking out😭