Ovulated this month but late period and negative pregnancy test

Has this happened to any of you? I had a positive ovulation test on June 15th and had sex multiple times that week. My period was suppose to start yesterday (June 30) and it hasn’t come yet. I’ve taken many pregnancy tests which all come back negative. I’m having light cramping, tender breasts, and back hurts. I’m going to give it a few more days and see if my period starts. If not, should I schedule an appointment with the doctor?

I’ve always had regular periods and they always started when they are suppose to. I also and ovulate like clock work each month. My husband and I have one son who is two and we are currently trying for another baby. I had 2 miscarriages this year.