Can I take extensive trip after surgery.

I had gallbladder removal surgery done around 39 days back. Stitches look fine and are healed. But I have slight pain in the abdomen area if I speak loudly sometimes or if I walk a lot - while coughing. My stomach feels bloated even though I am loosing weight. Is It okay to take an extensive trip where hiking, a lot of walking is involved? Also my vit d was 3.5 two and a half month back and I am taking weekly doses for the same and now it is 61+. Some of my friends feel it should be okay for the trip as this was a small surgery but I am still not used to oily or fatty foods which will be out of my control on the trip. Please advise what should I do. Also is the hiked vit d is a problem? Should I keep continuing the coarse or get It shown?