Confused about ovulation

My periods are generally 27 days long. Sometimes 28.

Me and DH BD on CD #11. The next day (cd12) had very watery CM, and left sided o pain. Normally i get o pain quite severely for 1-2 days. (Last month I had o pain starting CD 14 and 15. ) so then Cd13 I had a lot of cramping (af like) in the evening. Cd#14 not much happening except occasional twinges and some creamy CM but not a lot... always have to go looking for it.. lol Cd15 I wake up and after a bm a big blob of ewcm shows up. I don’t usually see much or any ewcm so am wondering if it was just pushed down from a couple days ago or the day before? We BD anyway but I’m worried we missed the egg on cd14.. kind of confused about what’s happening..

What’s the chances, with these symptoms and bd only only cd11 and cd15 ? I don’t use opks or temp... yet.. lol