I accidentally scrunched my nose really hard 4 days post op. Could I have damaged my nose or shifted something?

Exrtemely unlikely that you have compromised the result. However, it is best to keep in touch with your Plastic Surgeon. Remember that it takes many months for swelling to settle.

Good afternoon and thank you for your question,I do not think it is likely scrunching up your nose 4 days post op will have any sort of negative side effects on the procedure. If the soreness and numbness persists to a point where it becomes unbearable, please contact your plastic surgeon for a better consultation on the issue.Thank you and have a nice day.

It's unlikely you hurt your results, but since you're concerned, I recommend following up with your surgeon. Also, your nose and surrounding areas are going to be swollen for a while and you should be consulting the surgeon that performed the procedure but give yourself some time before going back in so some of it can subside. It can take up to a year for final results.
Sincerely,
Philip J. Miller, MD, FACS Double Board Certified Facial Plastic Surgeon