Hardest Times as a Sub

i have had the chance to talk with several subs/slaves/bottoms in the past few weeks as i have been working to learn more about and meet more people interested in the D/s life. Each one has offered a different angle or perspective on subbing...i have learned something from each that i keep consciously in my mind...one thing that another sub told me was that her hardest time as a sub was immediately before being with her DOM--her DOM would be in contact with her two to three times daily--once by email, once by phone and possibly a late night email..until 24-48 hours before their next play session when he would tell her when and where they were going to meet and he would then cut off all contact until the session...she would spend the next day to two days in a near panic..unable to clarify instructions with her DOM, to express any concerns, to feel reassured. She thinks she understands WHY he does this--both a control thing and to heighten her experience...but she hates it all the same.

since i am new in this life, i have had little experience, but MY hardest time is in the day or two FOLLOWING a session...THOSE are the times when i need reassurance that everything is fine, that i pleased my Master.

What are YOUR hardest times as a sub? as a DOM?