I was on strict home bedrest with my 19 month old for 12 weeks and I could tell you that when the baby was born at 38 wks, I felt such relief that I had not only kept her in for sooo long, but that I wasn't pregnant anymore! I know, probably only a bed rest mommie would say something like that, but i is so true. Don't worry about being exhausted. Naturally, you will feel week, but for me it wasn't overwhelming. I was able to enjoy my baby, and was gald i wasn't laying all the time anymore.