I always thought that people who said they just "knew" they were pregnant after BD were ridiculous. However, I had a really crazy experience right after we BDed. I felt all sparkly and like something was different. Then I dreamt of having a baby girl all night.
I used to think people who said that were crazy since often you dont actually conceive until days later. However, my lama (buddhist teacher) told me that the buddhist teachings say that the consciousness enters the man's central channel and then comes into the woman with the sperm. It waits there for the egg. So while I did not actually conceive until 2 days later, I had the feeling of that consciousness.
Again, I am not into that new age-y stuff, but it really happened to me! So I trust that women's intuition thing more which will hopefully help me at our homebirth.
We'll see if its a girl or not

Maybe I'm full of it.
XOXO
Beth