Feeling disheartened... help needed.

I have been using OPKs, bbt tracking and cervical mucus tracking, and it has really stressed me out! I feel constantly disappointed if my opk is dark enough, or my temperature hasn’t rise when it was supposed to do.

Does anybody have any tips on getting pregnant without all this?

How often to have sex ? And on what days?

Has anybody been given advice from a fertility expert they can share?

I would be extremely grateful of any help.

TIA x