Occasionally, there is some mild brief discomfort as the needle enters your skin. You may feel some heaviness, distention or warmth at the site of the needle and along the pathway it is accessing. These benign sensations are indications of how your body is interacting with the needles. Most of these sensations are mild and fleeting; most people would not call them pain.
Your comfort is a priority. Kristin has lots of experience treating people with needle phobias who often go on to become acupuncture fans and long term patients. They become long term patients because their symptoms are gone and they are hooked on the overall sense of well being that acupuncture provides!