Could my Nostril Be Collapsing 5 Years Post-Op? What Are Symptoms to Look For?

From the picture you have submitted, it appears you may have nostril collapse on that side. Unfortunately, the results of rhinoplasty may not become apparent for many years or you may have some intrinsic weakness in the cartilage. If you were happy with your rhinoplasty surgeon, I would first go back and see him/her. If not, I would see an expert in revision rhinoplasty to have the problem corrected.

It does look like that alar margin is collapse. It isn't uncommon for unwanted side effects to take a few years to turn up (if they are going to turn up at all). The scar contracture process can cause such issues, especially if the nasal structural support isn't enough to counter act these forces.

The alar margin can be rebuilt to provide an improved contour and function in the area.

The bloody noses may be related to turbulent airflow in the area, or it may be unrelated. You should visit with an experienced revision rhinoplasty surgeon to see what options you have.

You have alar collapse with an over projected tip, etc. You need to see an experienced revision rhinoplasty surgeon.