am I pregnant?

My last period was on January 3 2017 and I found out I was pregnant on February 3 but unfortunately I started slight bleeding on 25 of February and on March 5 I had a miscarriage and the sac comes out naturally. I have bleeding for almost a week and then it stop. Went for appointment on 20 of March the doctor did ultrasound and said all clear everything is on its normal size. After that we are having sex on regular basis. The thing is my periods haven't start yet. Is it normal to be this late after miscarriage or am I pregnant? Should I take a test or wait for a week or two to see if my periods gonna start?