C.O.
To the best of my knowledge - there is no truth to the myths about being able to get a certain sex with different positions....
Above all else - don't "TRY" - it will stress your body out - just have FUN!! If you stress about "TRYING" you will drive yourself insane and your body WILL stop you from getting pregnant - the flight or fight response - so instead of charting, etc. - just DO IT FOR FUN!!!