missed miscarriage.

Hi hope someone can help!
7th February at what we thought was out 12 week scan we discovered our baby had stoped growing at 9weeks! I had a d an c done a few days later then another one on the 5th march as some product was left behind! Bled on and off after but nothing since. I have been having unprotected sex since march 22. When should I expect my period or when should I test? Thank u in advance ❤