Hysterectomy help? I had a total hysterectomy in September and now I'm always really tired??

I am 31 and had to have a total hysterectomy this past September. The doctor left one ovary so I won't go thru menapause yet. My pain is gone,thank goodness, I had endometriosis..But now I am totally exhaused ALL the time. I just want to sleep like never before. A friend's grandma said it took her a year to get over the sleepiness, is that true? I have two children and can't sleep all the time. Thank goodness I am a stay at home mom.. If you had a hysterectomy what did you go through and how long did it take to feel normal. Also, if you don't mind telling me, how did it effect your life with your husband? I'm not in the mood much these days but it could be because I'm so tired *&^%$#@!! I don't know what to think,please help....Thanks in advance..