Feeling frustrated 😤

I came off birth control (nexplanon) over a month ago.. I bled for 5 days heavily 2 days after removal which I was told by many people it was "breakthrough" bleeding.. I've been expecting my period the past week as its been over a month but nothing.. I've been having unprotected sex very regularly with my husband.. I don't think I am pregnant, I've had no symptoms. I'm just so worried this nexplanon has mucked up my fertility long term ☹️ anyone else been through this? Can offer any advice?