DH were chatting about this. Old wives tales like ... community.babycenter.com/post/a28444349/51_gender_prediction_wives_tales
Of course they don't really work, what I find funny is they "clash" so much e.g. for me:
Sickness (girl)
During which I ate salted crisps (boy)
Combination skin (boy and girl)
Carrying high (boy or girl depending on old wife it seems!)
Not hairier (girl)
Leg hair didn't vanish I wish (boy)
...and so on.
I am mid 30s and conceived Xmas ... Guessing 100s of women did just this so hold little store by the Chinese table. Especially as the convert-to-lunar one told me I was actually 4 years older in Chinese years... grrrrr! 
What are your favourites? Just for fun!