Hi Alex, I had the closest thing to EWCM I've ever had 8dpo last month (I don't normally get EWCM). I think it was a late ovulation, 10days after the EWCM I got a BFP (18dpo, or so I thought), so that would back the theory! Unfortunately ended in a chemical pregnancy though.
What I'm trying to say is it could be that you ovulated late. It does happen. Are you opk-ing or temping? I wasn't so made it harder to know. I BD'd just in case, which obviously worked!