If you have to prepare for hysterectomy, there is plenty of advice on the Internet, and you might even want to invest into a paper book on the subject. In the comment to a post from someone who is in this situation, I have outlined two other possibilities for getting better sooner:
I see you are having a scheduled hysterectomy. As with any surgery, it pays to prepare up front. The most practical advice is to take Rescue Remedy a week or two before the surgery, and several days immediately after the surgery. It will help both with fear from surgery and with waking up from anesthesia.
Another practical advice would be to get initiated into Reiki or that somebody near you get initiated, so that you have regular access to Reiki treatments. That will considerably speed up the recovery and lessen or very soon eliminate the pains.