Is this an evaporation line do you think? I'm approx 15dpo, 2 days late. 5th cycle TTC #2 and this month I didn't get positive surge on opk but did have copious amounts of EWCM around 15 days ago and symptoms where all there. We BD every other day from cd8-cd17 then gave up hope but no signs of AF other than mild niggly cramps. I have headaches, bloating and feel a little 'spaced out' or not quite myself but really don't want to get my hopes up. It's a supermarket own test with the + positive results.