My nose looks big some days and others not. Why is this?

I don’t just mean slightly, I mean a lot. I’ve searched up and down the internet and have found no answer. This really effects me. On the days it’s big I just see red and am angry. Also usually get treated different to when my nose is not big. Please this is affecting my life. I cut people off because of it. The doctor to answer my question I’ll be happy to send my pictures to you of what exactly I am talking about, I just don't want my face plastered all over the internet and stuff is all please need help