TTC rainbow baby and no period


Hello, I lost my son the 14of June at 37 weeks when I was there at the hospital they told me his heart stopped beating .. I was devastated! But even tho I was devastated I felt like the only I could do is try again ... so I have been TTC seriously since this month but I still haven’t had my period yet so I clearly do not know when I am ovulating so it’s stressful for me wondering every time if I am preggo or just don’t have any period ! When did y’all start having your period back