Ovulation spotting???

Hi girls,

I had a positive opk at 5 p.m on Friday. And the whole Sunday night i was awake with kind of pulling or kind of stiffness in my lower abdomen, Monday morning i had spotting.

We have been trying for 8months now.

What is this spotting?? It was mixed with CM but kind of bright red in color. Should i be worried??? It has confused me.

Please Help