Ovulation Spotting (a little TMI)

Kaitlyn
I've heard of ovulation spotting but never experienced it. I had a positive OPK two days ago, and woke up this morning with some dark brownish spotting/bleeding (enough to wear a panty liner) and light cramping. I guess my question is if this could be ovulation spotting even though I had a positive OPK two days ago or if it's likely unrelated?