What could be causing redness inside my nose 1 year after rhinoplasty? (photos)

I had a rhinoplasty last year and I still have redness inside my nose. It looks like red horizontal veins with redness in the background. It doesn’t really bother me, but I feel like it contributes to my morning face and nose swellings that goes away after I have a glass water. I’m not sure if I should be worried and I don’t know what causes it. Maybe pet allergy I have and I have 3 cats? I’ve been told to take antibiotics for 7 days but I have gastritis,it’s painful for me..any suggestions?tnx