Stop trying?

Chastity
Ok ladies I have always heard once you stop trying is when you get pregnant. I am not going to do any opk and I'm not going to do any bbt. I think we will just try to have sex a couple time this week since it is my fertile week. Any other tips? I am going to have a hard time shutting my brain off from trying because I obsess over it way to much. Has anyone heard once you stop trying it happens?