Spotting before period/throughout cycle

I had a baby in April and this whole month I have had spotting off and on. It usually occurs after having an orgasm (no penetration). My period was due yesterday and it never came. I have had spotting off and on all week with bright red clots. This has happened a couple months ago and my OBGYN has done tests and ultrasounds and says it seems benign and everything seems fine on her end. But I’m worried. Has anyone else gone through this before??