My best advice is to relax and enjoy your remission. CA125 is not always a reliable marker for all of us. The only way to be sure that you have recurrent disease would be to have a CT or PET scan. Your doctor will probably not order one until/if your CA 125 rises above 35.
Mine recurred within 6 months and I pretty much knew it was back. I was tired all the time and had similar abdominal pains to those before surgery. When and if it comes back, you will know. As long as you feel well, enjoy everything.