So today is the 8-9th day my period didn't start , hasn't happened like this in over a year my…

So today is the 8-9th day my period didn't start , hasn't happened like this in over a year my period is usually on time. About a year ago I was almost 2 weeks late. I think I had a small miscarriage cause I had a really heavy period. I want to take a test but I'm scared to get let down again , Idk if others can relate. 😞 So instead of testing I may just wait another week. ? If I am pregnant however, it will be my 1st.