Papa1
Congratulations on making it through what sounds like a rough surgery. Remember to give yourself plenty of healing time and keep in mind your surgery was more extensive then had been expected. It takes your body time to recover from the long procedure as well as the long duration of anesthesia.
Here is a link to some helpful info that others have used:
Pre and Post Op Nissen Fundoplication Information:
http://www.oregonsurgical.com/patient_prep_gerd.htm
Caution: This link is for your information only and should never take the place of instructions given to you per your surgeon