sore boobs are a sign of?????

I've had sore boobs now for 3 days. They kill when I take my bra off.. but they hurt more if I touch the sides.
I'm Positive I ovulated on the 11th of this month.
I've had pink spotting on the 12th mixed with ewcm
And little bit of pink blood/ ewcm on the 16th.(covered the tp)
What do you think?