Am I miscarrying? (Tmi pic)

I'm 9 weeks today and had brown spotting last nyt and scared I'm miscarrying. 
​Took a cb digi this mornin at8am and it came back 1-2weeks so I'm stressing out now. So I took another at 12.30pm and it came back 2-3.  
​so this is the brown spotting I have been getting. 
Really scared. I'm in work so I can't go to the docs till tonight and it will only be to see the walk in nurses. Has anyone had anything like this? I thought I would have been 3+ on the cb digi by now being 9weeks!​