If there's a positive, and you've not taken any kind of medicine that contains HCG in it, you can assume that it's a true positive. Brown spotting isn't always something to worry about. There are cases where it can lead to miscarriage, but at other times it's nothing more than your body expelling old blood. Your main concern is if the blood turns red, gets clotty and you start to cramp. Make an appointment with your doctor so they can check you out and get you all set up.
i would go to the doctor and get checked but some people do spot at the beginning of there pregnancy. now brown blood is old blood so i wouldn't be that worried about it unless it was bright red and had chucks. good luck.
nah you aint having a miscarrage that is perfectly normal yeh u could be pregnant if it was positive i would buy a new hpt and take it and see what the result is for that