My first reponse is: "5 days is nothing." If you have a Master who functions in the real world like a normal person then there will be times when he is not available to you on a daily/hourly basis. Use this time to learn the patience and understanding which draws him to you.
How you respond during this time of crisis - not putting pressure on him, supporting what he is doing,etc. - is important. During the first year of my relationship with my former Dom both of his parents died. He told me afterwards that because I remained supportive and devoted despite his being away for long periods of time it solidified our relationship. He knew I was there for Him without demands.
IMHO: No Dom/me needs a clingy, nagging submissive/slave when things are tough for them in life.
I know it's hard. It's like growing pains though - tough during, but usually rewarding in the end in the sense that your relationship will be stronger. This I know to be true.
~rienzi