Ovulation bleeding

I'm on my second day of green circle and have been noticing for the past few months now I've been bleeding during my fertile week for a few hours or sometimes 2 days on and off. I'm obviously going to ask my doctor about this but wanted any input from anyone about this. Is it normal to bleed during ovulation as its never happened to me before. It's dark red like it would be my period red but its mixed in with cm and its enough that i need a small pantiliner for so I don't stain my underwear. It did not happen last month but it has been happening since april. I'm just really nervous! Also having my normal ovulation cramping nothing out of the ordinary or severe.