Bloody discharge

Help me out please ladies!! What does having bloody discharge mean?!

I’ve had it off and on the past 3 days. But the past day and a half nothing.

I’ve been sick with a bad cold/sinus infection and honestly when I blow my nose too hard once in a while the bearing down from that will cause some and I feel slight sharpness in my uterus area.

I took a pregnancy test, negative.

My cycle was weird last month, very light. Now two weeks later I have this. But ovulation test says I’m not even ovulating.

What the heck?! Any advice or insight??