hi i have a few questions on male fertility. My partner and i are planning a baby, he is on medication for his ADD he is taking dexamphetamines. We are in progress of trying the shettles method to try conceive a girl as we have 5 boys between us 2 being mine and 3 being his through previous relationships. I am at a fertile stage in my life early 20s my partner is 30. He also had a decreased sex drive at one stage but that seems to be back to normal. the main question i have is could he be slightly infertile because of the dexamphetamines ? And will the dexamphetamines favour a boy or girl? We have been trying now for 6 months, on the shettles method so we have intercourse from when my period is over to 3 days prior to ovulation. and our diets have also changed to favour a girl.