No, this is not normal. It may have been a miscarriage, but to have several weeks of abdominal pains like that is not right. You need to see your doctor as soon as you can. A normal miscarriage would have involved the pain ending after the expellation and bleeding were complete. You may have some kind of infection, cyst, or other uterine problem that certainly needs to be addressed by your doctor.
Best wishes to you.
