Hello,I think you should be fine but I would recommend following up with your surgeon as your nose heals to ensure the best outcome.
It is understandable to be anxious after a surgery, especially on the first day. In general, I expect a cast to be on your nose and secured so that minor bumps should not be a problem - yet still avoided if possible. I recommend you contacting your trusted surgeon. He/she should be able to answer your question with more authority.