I am bleeding more than 7 days and it is normal bleeding sometimes it is heavy could I be having a miscarriage or could it mean I am pregnant I do be tired a lot and nausea and real bad headace and low admonail be sore

If. If your bleeding is out of the normal for you, and the bleeding continues past the normal number of days you bleed, then yes there is a possibilty you could be having a miscarriage, or threatening to have a miscarriage. The only way to find out is to schedule a visit with your doctor for a complete evaluation. On the other hand you may just be having a heavier than normal period. Also, you should probably be screened for fibroids, which are benign tumors of the uterus, and commonly cause heavy periods. Good luck.