I haven't ovulated but afraid I missed my LH surge, when to dtd?

^ I agree with Maiden on the CB advanced OPKs. It could at least give you a heads up on things especially since you test with FMU. The only caveat is it can give you several days of high readings before peak. If you're doing E4D though then you don't have to use OPKs if you don't want.

When in doubt, DTD. You can get pregnant from attempt before O, but not after.

O pains and EWCM can change when swaying so don't put too much stock into them.