ovulation after miscarriage

Jenn
I had a miscarriage at 4+weeks. Everything ended naturally. My levels went down to 0 within 4 days.  My last period was march 4. The first day of the miscarriage with blood was April 7. 
Glow is still telling me that my fertile days are the same as if I didn't have a miscarriage. However, I am wondering how to calculate after? Would I potentially ovulate later? CM is clear right now.... 
Please help and let me know your experiences.