8 Days Postop for Rhinoplasty, and I Hit my Nose Causing a Small Bump to Appear?

Yes, it is wise to call the physician/surgeon and explain what happened. Close follow-up is always better than just hopeful waiting.

Dear Amy, I believe the best thing you can do now is to contact your surgeon and tell him/her about what happened with you; perhaps rescheduling your examination to be sooner than 2 weeks could be a good idea. Meanwhile, keep an eye on that "red bump" monitoring any changes that may occur with it (better or worse). The red bump may be just a small reaction to the trauma you had and would have not affected any integral element of your nose but without examination it is not... more

From the sounds of the events you may have just caused a slight bruise on the dorsum from the trauma. It is always good to see your surgeon so i would make a sooner follow up appointment and tell your surgeon what happened. This will help bring you some comfort regarding the events and be careful. Protect your investment. Best regards!