I had a miscarriage on 16th may at 8 weeks pregnant, and my first day of period was 30th june. i want to know when do i ovulate as my cycle is 28 days?

Miscarriage: If this is the first cycle after your miscarriage, you could go back to your normal menstrual pattern and be ovulating. In some patients, it may take a bit longer for your cycles to return to normal. Still, many physicians would recommend you not try to get pregnant with this cycle but wait 2-3 cycles after the miscarriage before trying again.