I'm due Aug 3 too, although I'll be delivering in July for sure, as I'll be having a repeat C-section.
Zaydensmum - I think it's a tossup - impossible to know which attempt got you pregnant. I'd probably be inclined to say the O-2 was more likely to, based on conception stats. I hear ya about not convincing yourself it's a girl. I am going to assume boy until I learn otherwise, in order to minimize any disappointment as much as possible.