Miscarriage and late period

Krystal

Hi

Everyone I had a miscarriage on sept. 2, 2016 I was not aware that I was pregrant I was still getting what I thought was a period. Futhermore, I found out I was pregnant when I went to the emergency room due to horrible pains and the doctor informed me that I was having a miscarriage. On sept. 9,2016 my husband and I went to the ob/gyn for a follow up and she said everything was looking good and that my cervix had closed. Two days later we started back having sex and on Sept 15 was my scheduled AF but it never showed I have taken two pregnancy tests both are saying negative. Could I be testing to early ?