Well I know for me as well as for quite a few of my friends this seems to deem true
My sons were conceived within days of my period ending, all 3 of them, and my daughter was conceived closer to the 2 week mark. Its supposed to be that you get pregnant 2 weeks before or 2 weeks after your period, well I have never gotten pregnant before but I have after and everytime its come out to be the same thing.. Thankfully I had 1 girl out of the 4 kids and I am happy that I did. She is a beautiful blessing. Now at 5 I couldn't image not having a daughter in my life.
Good Luck I hope something works for you
P.S.
That Chinese Calander worked for 2 girls in my office but for myself and my friend it said we were both having girls and we both had boys, so don't completely rely on that one.