Carameline - I thought I was the "poster child" for boy mom and thought I barely had a snowball's chance of getting a girl even despite a strong sway, and my sway worked.
Even if your 90/10 stat without swaying were true (which I highly doubt) you'd still have a 10% chance of having a girl. Sways can (and do) work, even for people like me who I thought only made boys. Don't give up and hang in there, and let us know what we can do to help with your sway because that's why we're all here! :HH: