Spotting? TMI

Kirsty
I have pcos so I'm not sure if my cycle is regular yet as I've just started ttc. But approx 3 dpo (though still not 100% sure when I ovulate, due to my pcos.) I be started spotting blood. I don't have period cramps, and the blood is a combination between dark brown and pink creamy. Has anyone experienced anything like this? 
I've also had severe migraine for about 24 hours now.