If couple in NOT married each of them should sleep with the head pointing to one of their best directions even when it means sleeping in separate bed,( always check fying star fengshui for the year to make sure you are not pointing your head to bad flying stars for the year).
In your situation you are married so the situation is different. To all married couples husband is the head of the family, so if his luck is afflicted then the wife will suffer as well. Married males should always sleep with their head pointed to the correct best direction for their Kua number very important since their luck will affect the luck of the wife. Grand Master Lillian Too said is ok for the wife to sleep to her husband best luck direction (only good for married couples) since she is protected under her husband luck.
What i'm trying to say you are Kua number 9 and you sleep with the head pointed to West one of the bad directions. Since we are now in Dragon year anthill February 4 2013 you can sleep with your head pointed to east or South. Next year starting from February 4th you can sleep with your head pointed to ether South or North.
Take care
