I had a full hysterectomy 4.5 years ago (including ovaries), and you want to be very careful to follow their orders regarding activity and healing. Yes it is hard to stay off the bike that long, and I am assuming that they were able to do it with one of the less invasive techniques rather than the "old fashioned" way. The less invasive procedures are great (I've had abdominal surgery twice - once with the Da Vinci machine and the other the "old way"). The only problem with the less invasive procedures, if you want to call it a "problem" is it becomes tempting to do things too early since there aren't all of those healing muscles slowing us down.
Is there some hobby that you used to enjoy, or would like to learn? Personally, I would either do needlework or crochet during this recover period. Good books and good music. Your body needs to rest right now, so take advantage of that.