Advice anyone plz.

On 8/20 i had what was a suspected miscarriage.. On 8/21 went in for blood work and hcg was at a 9. Went on 8/25 again and hcg went to a 13.. Nurse said i could possibly still be pregnant. But then why did i have the bleeding and the blood clots, and let me not forget the pain?? Has this happened to anybody? How did it work out?? If still PG baby's due date is 4/16/16.