If the incision has a lot of tension (is very tight), some surgeons will leave the sutures in longer. However, 12 days for suture removal may be a little long and runs the risk of leaving suture marks or railroad track scars. You should call your surgeon's office to have your concerns addressed.
Italian seasoning is a spice mixture popular in many parts of the world that attempts to capture some of the most common flavors of Italian cooking. It is typically sold as a dried herb mix. It can contain a wide range of ingredients, but rosemary, oregano, thyme, and marjoram are usually some of the most common.
But, I would recommend you not mix your spices into a homemade Italian seasoning mix, for a few reasons. First, some of the core mix are better dry, like Oregano -- Oregano needs to dry out to attain full flavor. Others, like Basil absolutely suck dried out, and taste way, way better fresh. Most spices taste better fresh. Second, most legit Italian food doesn't use a big mix-o-spices.