I got banded two weeks ago and I am still sensitive to pain. I would suggest putting ice on the area and also one thing that helped me was getting up and walking often. Everyone is different and you have to just allow your body the time to heal.
I wanted to let you know that I am in the same situation as yourself. I will be undergoing the lap band surgery in July and I am excixted and nervous about the life-long change. I have always struggled with obesity and I am finally happy to have something that will change my life completely.