you need to tell your boss!! that is a must! i am at this very point. i think this week might be my last week at work because i can't seem to get caught up with my fatigue. i tried hiding it tho and everytime my boss asked me how i was i just said okay until the other day i just broke down. said that i was not okay...that i wish if i saw it enough that it will be true but that at this point i am not sure if i can do my job to the best of my ability and that really bothers me. We had a long talk...he told me that i need to take care of myself now because i am going to look back and wish that i would have not tried to fight this disease so hard and learn to just deal with the limitations and change things and who knows if i take time off if maybe in a month or so id be able to come back to normal because i took the time off...you need to listen to your body and take care of yourself....hard as it is...hope all works out with you..and you get some rest and feeling better!