septum ring is too small and it hurts?

I just got my septum pierced at a local piercing and tattoo place and the girl who pierced me gave me a very small ring without looking very much at the size of my nose, I thought it looked big enough not knowing better and didn’t say anything. Well the balls are on the inside of my nose, I guess my sweet spot is high as well. The balls are literally rubbing little holes into my lower septum skin from the ring being so small and tight. I’m afraid those cuts will get infected and infect the piercing itself. I went back because the balls rubbed too much and one fell off, and the piercer said he couldn’t change it for a month. What should I do in the mean time to help my nose heal if I can’t change the thing causing it. I’m also scared to change it so early, I don’t want to but might have to.