Hello! I bought OPKs to use but the brand I got SUCKS. So I did not really use them this cycle. I've always gone by ewcm and cramps to judge O day and so far I have been right on the money. I think I Od on Monday so that only puts me at 3 dpo. Today I had one spot of ewcm and then it went back to dry/creamy as it has been the past 2 days. Of course I got curious and took an OPK. My question is would the OPK still be this dark (it's not positive) at 3  PO and that was left over ewcm or do you think I am about to O now and I was wrong on my dates? Thanks for any advice :)