Spotting mid cycle question?

Tahlia
Ladies, I am a woman who never spots or has any breakthrough bleeding. If there's blood, it's coz I'm getting AF
I have short cycles and seem to ovulate immediately after AF, so about day 8 or 9. Last night I went to the loo and had just a couple of spots of blood, nothing on my knickers. 3 wipes and gone. 
I was cycle day 14. Any ideas of what this could be? Funny hormones?