I've waited hours and hours after having sex to check CM and I am still worried it is skewing my samples. I always seem to feel a more moisture inside the whole day (like at least 12 hours) after sex. This makes it really hard to figure out my CM because I have sex often.

(TMI alert) For example, I had sex this morning at 8:30am. I checked my CM (or whatever) just now and it feels very wet, slippery and can be stretched very far between fingers. I think this must be semen because I am on CD6 and I would assume this is way too early for EWCM.

How long after sex can I check CM? What works for you?