7 days till AF and feeling bit fatigued & rough. Is it too early to feel pregnant?

Manda
I'm ttc baby #2 it's month 5. I'm not due AF until a week today but today for the first time I've started to feel a bit funny. Would it be too soon yet to start feeling symptoms? I remember from my first the week before AF I was Sooo tired all the time but I'm wondering if this is just wishful thinking in my head?