What should I do after hitting my nose 1 month post op and it's bigger and red?

I have had a septoplasty the 7th August and it was a success, today I've been in the pool and i hit my nose with a mask, my nose is swelling and red and the nose bridge is bigger so I applied some ice. I'm so worried cause it can stay permanent? Please give me an advice on what I have to do as soon as possible. Thank you very much