If you're meant to be going in a week, and the doctor said to wait a week, are you saying that the question is whether to go in two weeks instead of one?
Is the trip alone or with someone else? If you're going by yourself, it seems like you could just see how the healing is going in a week, and make a determination then. If someone else's schedule will be affected by you taking a more relaxed attitude about the day you leave, talk to them and see if it will be affected a lot or just a little.