Best Feng Shui direction?

I want to move my bed. Right now the head is in the SE direction which is not good for me considering I am in the West Group. I want to move it so that the head is against the SW wall, however the corner right next to the bed is direct S (which is also very bad for me). Does it matter that the bed is so close to that south corner? The bed would have to be diagonal in the corner before it would be directly south. But since I am putting it directly against the SW wall is that south corner going to have any bearing on my sleeping position. Also if I were to put the bed against the SW wall that would also be the command position. Is it ok to go ahead and do this or does the S corner make a difference?