Morning!
I've been in a similar situation, and still am. I took a test last thursday which was positive and I figured I'd be about almost 6 weeks. Three days later I noticed brown discharge, which turned into spotting of blood later on. The next day the blood got heavier and redder and is the same today. I also have what is like period cramp, but not as bad. I've had blood taken and am waiting for my 2nd results to see if my hcg level has dropped. If so I'm miscarrying.
So, based on this your problem is still potentially early on. However, you may only experience the brown discharge and that's all! So you need to wait it out and see what happens. Obviously if you end up in any pain or with heavy bleeding, or any other worrying symptoms you could get seen as an early temporary patient either at a GP or emergency room. I have been reading up about my situation since sunday (as I'm obviously freaking out), and the best conclusion I can come to is that bleeding in early pregnancy is really really common, and a lot of the time it doesn't necessarily mean you'll have a miscarriage. But it could just as easily be a miscarriage.
Best advice I can give is as I said earlier - wait it out, see if it turns to bleeding. If it does and you're not in any sort of pain you'll probably be ok. But if you have cramping or anything else it could be worth getting it checked out. In my experience over the past few days they don't do much for you other than take your blood and get hgc level readings to see if your hcg is increasing. You may just be seeing implantation spots...
Good luck whatever happens, I know how you're feeling and its very frustrating. Stay as calm as you can and ill keep my fingers crossed for you. X