My last period was Sept 18, I have had some of the symptoms of pregnancy, fatigue, excess discharge, dizzyness,low back ache. I have taken hpts for about 3 weeks now. I got a faint positive on a first response on Thursday morning with my first mornings pee. I decided to go to the lab and have a blood test done. It came back neg. I scheduled an appt with my doc and had a urine test on Fri at the Docs and it was neg. Met with the doc and they are going to do a pelvic ultrasound tomorrow. I left the docs and took another HPt which came back positive. This time the line was darker. Since then, on Friday night, i had some dark spotting. Saturday I also had some light spotting, just one time) and today I had dark brownish blood when I wiped. It is not a constant spotting it just happens once. After I wipe it doesnt come back till next time. Am i pregnant? Is this a miscarriage? I have not had any cramping, just nauseousness. HELP, please.