Welcome back Bluesnow! It's good to see you again. Was almost starting to worry...
ladyem tricky one. FertilityFriend changed my ovulation date this month after two days of even further elevated temps, so it can be a bit confusing. As for your questions, my take on it would be:
1, It depends on how long you've been temping, how well you know yourself, and how accurately you know you took your temps. You can apparently however get EWCM up to three days before actual ov, and again throughout the cycle....
2, Even if you only shagged up until Tues, you should be fine for Thurs if there was EWCM (and apparently more likely to conceive a girl).
3, If you ov'd on last Thurs, then it's definitely too early to get a bfp, yes.
4, Nope, this is the right time for implantation.
5, Hmm, I guess because you're looking out for the signs? They say it feels like that whether your pg or not sometimes, so I don't think that's relevant until she actually shows ut!
Hope everyone has a good weekend!