What would happen to my nose if I removed my plastic plaster after my Rhinoplasty ?

I would ask your surgeon about what you should do at this point.  Kenneth Hughes, MDLos Angeles, CA..

Since the cast on your nose fell off early after your rhinoplasty, you should contact your surgeon.  It is possible that your surgeon may want to replace it.  The purpose of the cast is to keep your nose in position and it can help prevent any damage to your nose if it is accidentally bumped or hit.