Legs up the wall!

Cez • 35 years old, mum to a little boy and I`m engaged to the most wonderful man. Trying to conceive since February 2015
Me and my fiancé have been trying to conceive since February and have had no luck. This week is my most fertile period of my cycle (yesterday and today especially) and after intercourse I've been laying on my back with my legs up the wall to try help me conceive. Is that just an old wives tale or does it actually work??