Hi, I am a 24 year old girl and up until yesterday my period was 7 days late. I visited the doctor and he took a blood test saying he was 95% sure I was about 3-4 weeks pregnant and to come back thus afternoon for confirmation. Today for the last 3 hours I have had slight cramping and brownish to dark reding light bleeding. I rang the doctor and he said I need to wait till this afternoon. I'm worried. Could I be miscarring or is this my period coming late?