Hi and welcome!
Can you post a photo, by chance? If it is an infantile hemangioma, and is not large, then wait and see might be an appropriate treatment. I would concentrate my questions on what to do IF it grows, IF it ulcerates, IF it begins to grow quickly. Ask him what the signs of involution are, so you can recognize it if need be. I would focus more on what to do if it suddenly becomes more of a problem.
Others will chime in soon, but come back next week and let us know what happens!