Not tracked this month with opks just bd a lot more than ever before. Followed lady timer app on my phone which had my fertile time being from Tuesday 15th thru to 18th. We did it cd 10, 11, 12, 13 and 15. Had cramping on cd 14 evening so I think I ovulated yesterday. From 11 this morning I have had the worst headache can't shift it tried paracetamol but it doesn't touch it. Hoping thus is a good sign but at only 1 dpo would I really have any symptoms? Have a good feeling this month!